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Merge branch 'master' into columnfamilies

Browse Source 
Conflicts:
	db/db_impl.cc
	db/db_test.cc
	db/internal_stats.cc
	db/internal_stats.h
	db/version_edit.cc
	db/version_edit.h
	db/version_set.cc
	include/rocksdb/options.h
	util/options.cc
This commit is contained in:
Igor Canadi 2014-03-31 12:44:54 -07:00
commit ddbd1ece88
41 changed files with 1813 additions and 254 deletions
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3
HISTORY.md
View File

@ -16,7 +16,7 @@
* Added "virtual void WaitForJoin()" in class Env. Default operation is no-op.
* Removed BackupEngine::DeleteBackupsNewerThan() function
* Added new option -- verify_checksums_in_compaction
* Chagned Options.prefix_extractor from raw pointer to shared_ptr (take ownership)
* Changed Options.prefix_extractor from raw pointer to shared_ptr (take ownership)
Changed HashSkipListRepFactory and HashLinkListRepFactory constructor to not take SliceTransform object (use Options.prefix_extractor implicitly)
* Added Env::GetThreadPoolQueueLen(), which returns the waiting queue length of thread pools
* Added a command "checkconsistency" in ldb tool, which checks
@ -28,6 +28,7 @@
we will ignore it. We assume that writers of these records were interrupted
and that we can safely ignore it.
* Now compaction filter has a V2 interface. It buffers the kv-pairs sharing the same key prefix, process them in batches, and return the batched results back to DB.
* Geo-spatial support for locations and radial-search.
## 2.7.0 (01/28/2014)

35
Makefile
View File

@ -94,7 +94,8 @@ TESTS = \
write_batch_test\
deletefile_test \
table_test \
thread_local_test
thread_local_test \
geodb_test
TOOLS = \
sst_dump \
@ -370,6 +371,9 @@ merge_test: db/merge_test.o $(LIBOBJECTS) $(TESTHARNESS)
deletefile_test: db/deletefile_test.o $(LIBOBJECTS) $(TESTHARNESS)
$(CXX) db/deletefile_test.o $(LIBOBJECTS) $(TESTHARNESS) $(EXEC_LDFLAGS) -o $@ $(LDFLAGS)
geodb_test: utilities/geodb/geodb_test.o $(LIBOBJECTS) $(TESTHARNESS)
$(CXX) utilities/geodb/geodb_test.o $(LIBOBJECTS) $(TESTHARNESS) $(EXEC_LDFLAGS) -o $@ $(LDFLAGS) $(COVERAGEFLAGS)
$(MEMENVLIBRARY) : $(MEMENVOBJECTS)
rm -f $@
$(AR) -rs $@ $(MEMENVOBJECTS)
@ -398,6 +402,31 @@ sst_dump: tools/sst_dump.o $(LIBOBJECTS)
ldb: tools/ldb.o $(LIBOBJECTS)
$(CXX) tools/ldb.o $(LIBOBJECTS) $(EXEC_LDFLAGS) -o $@ $(LDFLAGS) $(COVERAGEFLAGS)
# ---------------------------------------------------------------------------
# Jni stuff
# ---------------------------------------------------------------------------
JNI_NATIVE_SOURCES = ./java/rocksjni/rocksjni.cc
JAVA_INCLUDE = -I/usr/lib/jvm/java-openjdk/include/ -I/usr/lib/jvm/java-openjdk/include/linux
ROCKSDBJNILIB = ./java/librocksdbjni.so
ifeq ($(PLATFORM), OS_MACOSX)
ROCKSDBJNILIB = ./java/librocksdbjni.jnilib
JAVA_INCLUDE = -I/System/Library/Frameworks/JavaVM.framework/Headers/
endif
jni: clean
OPT="-fPIC -DNDEBUG -O2" $(MAKE) $(LIBRARY) -j32
cd java;$(MAKE) java;
$(CXX) $(CXXFLAGS) -I./java/. $(JAVA_INCLUDE) -shared -fPIC -o $(ROCKSDBJNILIB) $(JNI_NATIVE_SOURCES) $(LIBOBJECTS) $(LDFLAGS) $(COVERAGEFLAGS)
jclean:
cd java;$(MAKE) clean;
rm -f $(ROCKSDBJNILIB)
jtest:
cd java;$(MAKE) sample;
# ---------------------------------------------------------------------------
# Platform-specific compilation
# ---------------------------------------------------------------------------
@ -461,6 +490,10 @@ depend: $(DEPFILES)
# working solution.
ifneq ($(MAKECMDGOALS),clean)
ifneq ($(MAKECMDGOALS),format)
ifneq ($(MAKECMDGOALS),jclean)
ifneq ($(MAKECMDGOALS),jtest)
-include $(DEPFILES)
endif
endif
endif
endif

2
db/column_family.cc
View File

@ -300,12 +300,12 @@ Compaction* ColumnFamilyData::CompactRange(int input_level, int output_level,
SuperVersion* ColumnFamilyData::InstallSuperVersion(
SuperVersion* new_superversion, port::Mutex* db_mutex) {
new_superversion->db_mutex = db_mutex;
new_superversion->Init(mem_, imm_.current(), current_);
SuperVersion* old_superversion = super_version_;
super_version_ = new_superversion;
++super_version_number_;
super_version_->version_number = super_version_number_;
super_version_->db_mutex = db_mutex;
if (old_superversion != nullptr && old_superversion->Unref()) {
old_superversion->Cleanup();
return old_superversion; // will let caller delete outside of mutex

1
db/column_family_test.cc
View File

@ -704,6 +704,7 @@ TEST(ColumnFamilyTest, DifferentCompactionStyles) {
default_cf.filter_policy = nullptr;
default_cf.no_block_cache = true;
default_cf.source_compaction_factor = 100;
default_cf.disable_seek_compaction = false;
one.compaction_style = kCompactionStyleUniversal;
// trigger compaction if there are >= 4 files

2
db/corruption_test.cc
View File

@ -387,7 +387,7 @@ TEST(CorruptionTest, FileSystemStateCorrupted) {
DBImpl* dbi = reinterpret_cast<DBImpl*>(db_);
std::vector<LiveFileMetaData> metadata;
dbi->GetLiveFilesMetaData(&metadata);
ASSERT_GT(metadata.size(), 0);
ASSERT_GT(metadata.size(), size_t(0));
std::string filename = dbname_ + metadata[0].name;
delete db_;

13
db/db_bench.cc
View File

@ -134,6 +134,8 @@ DEFINE_int64(read_range, 1, "When ==1 reads use ::Get, when >1 reads use"
DEFINE_bool(use_prefix_blooms, false, "Whether to place prefixes in blooms");
DEFINE_int32(bloom_locality, 0, "Control bloom filter probes locality");
DEFINE_bool(use_prefix_api, false, "Whether to set ReadOptions.prefix for"
" prefixscanrandom. If true, use_prefix_blooms must also be true.");
@ -1543,6 +1545,7 @@ class Benchmark {
NewFixedPrefixTransform(FLAGS_prefix_size));
}
options.memtable_prefix_bloom_bits = FLAGS_memtable_bloom_bits;
options.bloom_locality = FLAGS_bloom_locality;
options.max_open_files = FLAGS_open_files;
options.statistics = dbstats;
options.env = FLAGS_env;
@ -1916,7 +1919,7 @@ class Benchmark {
Duration duration(FLAGS_duration, reads_);
int64_t found = 0;
int64_t read = 0;
if (FLAGS_use_multiget) { // MultiGet
const long& kpg = FLAGS_keys_per_multiget; // keys per multiget group
long keys_left = reads_;
@ -1924,6 +1927,7 @@ class Benchmark {
// Recalculate number of keys per group, and call MultiGet until done
long num_keys;
while(num_keys = std::min(keys_left, kpg), !duration.Done(num_keys)) {
read += num_keys;
found +=
MultiGetRandom(options, num_keys, &thread->rand, FLAGS_num, "");
thread->stats.FinishedSingleOp(db_);
@ -1937,8 +1941,9 @@ class Benchmark {
std::string key = GenerateKeyFromInt(k, FLAGS_num);
iter->Seek(key);
read++;
if (iter->Valid() && iter->key().compare(Slice(key)) == 0) {
++found;
found++;
}
thread->stats.FinishedSingleOp(db_);
@ -1957,6 +1962,7 @@ class Benchmark {
}
if (FLAGS_read_range < 2) {
read++;
if (db_->Get(options, key, &value).ok()) {
found++;
}
@ -1972,6 +1978,7 @@ class Benchmark {
db_->GetApproximateSizes(&range, 1, &sizes);
}
read += FLAGS_read_range;
for (iter->Seek(key);
iter->Valid() && count <= FLAGS_read_range;
++count, iter->Next()) {
@ -1992,7 +1999,7 @@ class Benchmark {
char msg[100];
snprintf(msg, sizeof(msg), "(%" PRIu64 " of %" PRIu64 " found)",
found, reads_);
found, read);
thread->stats.AddMessage(msg);

3
db/db_impl.cc
View File

@ -70,7 +70,6 @@
namespace rocksdb {
const std::string default_column_family_name("default");
const std::string kNullString = "NULL";
void DumpLeveldbBuildVersion(Logger * log);
@ -466,7 +465,6 @@ uint64_t DBImpl::TEST_Current_Manifest_FileNo() {
Status DBImpl::NewDB() {
VersionEdit new_db;
new_db.SetVersionNumber();
new_db.SetLogNumber(0);
new_db.SetNextFile(2);
new_db.SetLastSequence(0);
@ -2826,7 +2824,6 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
assert(compact);
compact->CleanupBatchBuffer();
compact->CleanupMergedBuffer();
compact->cur_prefix_ = kNullString;
bool prefix_initialized = false;
int64_t imm_micros = 0; // Micros spent doing imm_ compactions

1
db/db_impl.h
View File

@ -269,6 +269,7 @@ class DBImpl : public DB {
private:
friend class DB;
friend class InternalStats;
friend class TailingIterator;
friend struct SuperVersion;
struct CompactionState;

29
db/db_test.cc
View File

@ -432,6 +432,7 @@ class DBTest {
options.compaction_style = kCompactionStyleUniversal;
break;
case kCompressedBlockCache:
options.allow_mmap_writes = true;
options.block_cache_compressed = NewLRUCache(8*1024*1024);
break;
case kInfiniteMaxOpenFiles:
@ -2185,6 +2186,8 @@ TEST(DBTest, NumImmutableMemTable) {
ASSERT_EQ(1, (int) perf_context.get_from_memtable_count);
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "k3", big_value));
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.cur-size-active-mem-table", &num));
ASSERT_TRUE(dbfull()->GetProperty(handles_[1],
"rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "2");
@ -2202,6 +2205,11 @@ TEST(DBTest, NumImmutableMemTable) {
ASSERT_TRUE(dbfull()->GetProperty(handles_[1],
"rocksdb.num-immutable-mem-table", &num));
ASSERT_EQ(num, "0");
ASSERT_TRUE(dbfull()->GetProperty(
handles_[1], "rocksdb.cur-size-active-mem-table", &num));
// "208" is the size of the metadata of an empty skiplist, this would
// break if we change the default skiplist implementation
ASSERT_EQ(num, "208");
SetPerfLevel(kDisable);
} while (ChangeCompactOptions());
}
@ -3481,6 +3489,7 @@ TEST(DBTest, InPlaceUpdateCallbackNoAction) {
TEST(DBTest, CompactionFilter) {
Options options = CurrentOptions();
options.max_open_files = -1;
options.num_levels = 3;
options.max_mem_compaction_level = 0;
options.compaction_filter_factory = std::make_shared<KeepFilterFactory>();
@ -3848,9 +3857,11 @@ TEST(DBTest, CompactionFilterV2) {
options.num_levels = 3;
options.max_mem_compaction_level = 0;
// extract prefix
auto prefix_extractor = NewFixedPrefixTransform(8);
std::unique_ptr<const SliceTransform> prefix_extractor;
prefix_extractor.reset(NewFixedPrefixTransform(8));
options.compaction_filter_factory_v2
= std::make_shared<KeepFilterFactoryV2>(prefix_extractor);
= std::make_shared<KeepFilterFactoryV2>(prefix_extractor.get());
// In a testing environment, we can only flush the application
// compaction filter buffer using universal compaction
option_config_ = kUniversalCompaction;
@ -3898,7 +3909,7 @@ TEST(DBTest, CompactionFilterV2) {
// create a new database with the compaction
// filter in such a way that it deletes all keys
options.compaction_filter_factory_v2 =
std::make_shared<DeleteFilterFactoryV2>(prefix_extractor);
std::make_shared<DeleteFilterFactoryV2>(prefix_extractor.get());
options.create_if_missing = true;
DestroyAndReopen(&options);
@ -3933,9 +3944,10 @@ TEST(DBTest, CompactionFilterV2WithValueChange) {
Options options = CurrentOptions();
options.num_levels = 3;
options.max_mem_compaction_level = 0;
auto prefix_extractor = NewFixedPrefixTransform(8);
std::unique_ptr<const SliceTransform> prefix_extractor;
prefix_extractor.reset(NewFixedPrefixTransform(8));
options.compaction_filter_factory_v2 =
std::make_shared<ChangeFilterFactoryV2>(prefix_extractor);
std::make_shared<ChangeFilterFactoryV2>(prefix_extractor.get());
// In a testing environment, we can only flush the application
// compaction filter buffer using universal compaction
option_config_ = kUniversalCompaction;
@ -3973,9 +3985,10 @@ TEST(DBTest, CompactionFilterV2NULLPrefix) {
Options options = CurrentOptions();
options.num_levels = 3;
options.max_mem_compaction_level = 0;
auto prefix_extractor = NewFixedPrefixTransform(8);
std::unique_ptr<const SliceTransform> prefix_extractor;
prefix_extractor.reset(NewFixedPrefixTransform(8));
options.compaction_filter_factory_v2 =
std::make_shared<ChangeFilterFactoryV2>(prefix_extractor);
std::make_shared<ChangeFilterFactoryV2>(prefix_extractor.get());
// In a testing environment, we can only flush the application
// compaction filter buffer using universal compaction
option_config_ = kUniversalCompaction;
@ -4713,6 +4726,7 @@ TEST(DBTest, NoSpace) {
do {
Options options = CurrentOptions();
options.env = env_;
options.paranoid_checks = false;
Reopen(&options);
ASSERT_OK(Put("foo", "v1"));
@ -5506,6 +5520,7 @@ TEST(DBTest, ReadCompaction) {
options.filter_policy = nullptr;
options.block_size = 4096;
options.no_block_cache = true;
options.disable_seek_compaction = false;
CreateAndReopenWithCF({"pikachu"}, &options);

8
db/internal_stats.cc
View File

@ -35,6 +35,8 @@ DBPropertyType GetPropertyType(const Slice& property) {
return kCompactionPending;
} else if (in == "background-errors") {
return kBackgroundErrors;
} else if (in == "cur-size-active-mem-table") {
return kCurSizeActiveMemTable;
}
return kUnknown;
}
@ -339,12 +341,14 @@ bool InternalStats::GetProperty(DBPropertyType property_type,
// 0 otherwise,
*value = std::to_string(current->NeedsCompaction() ? 1 : 0);
return true;
/////////////
case kBackgroundErrors:
// Accumulated number of errors in background flushes or compactions.
*value = std::to_string(GetBackgroundErrorCount());
return true;
/////////
case kCurSizeActiveMemTable:
// Current size of the active memtable
*value = std::to_string(cfd->mem()->ApproximateMemoryUsage());
return true;
default:
return false;
}

2
db/internal_stats.h
View File

@ -21,6 +21,7 @@ class ColumnFamilyData;
namespace rocksdb {
class MemTableList;
class DBImpl;
enum DBPropertyType {
kNumFilesAtLevel, // Number of files at a specific level
@ -33,6 +34,7 @@ enum DBPropertyType {
// 0.
kCompactionPending, // Return 1 if a compaction is pending. Otherwise 0.
kBackgroundErrors, // Return accumulated background errors encountered.
kCurSizeActiveMemTable, // Return current size of the active memtable
kUnknown,
};

23
db/memtable.cc
View File

@ -52,6 +52,7 @@ MemTable::MemTable(const InternalKeyComparator& cmp,
assert(!should_flush_);
if (prefix_extractor_ && options.memtable_prefix_bloom_bits > 0) {
prefix_bloom_.reset(new DynamicBloom(options.memtable_prefix_bloom_bits,
options.bloom_locality,
options.memtable_prefix_bloom_probes));
}
}
@ -154,22 +155,24 @@ const char* EncodeKey(std::string* scratch, const Slice& target) {
class MemTableIterator: public Iterator {
public:
MemTableIterator(const MemTable& mem, const ReadOptions& options)
: mem_(mem), iter_(), dynamic_prefix_seek_(false), valid_(false) {
: bloom_(nullptr),
prefix_extractor_(mem.prefix_extractor_),
iter_(),
valid_(false) {
if (options.prefix) {
iter_.reset(mem_.table_->GetPrefixIterator(*options.prefix));
iter_.reset(mem.table_->GetPrefixIterator(*options.prefix));
} else if (options.prefix_seek) {
dynamic_prefix_seek_ = true;
iter_.reset(mem_.table_->GetDynamicPrefixIterator());
bloom_ = mem.prefix_bloom_.get();
iter_.reset(mem.table_->GetDynamicPrefixIterator());
} else {
iter_.reset(mem_.table_->GetIterator());
iter_.reset(mem.table_->GetIterator());
}
}
virtual bool Valid() const { return valid_; }
virtual void Seek(const Slice& k) {
if (dynamic_prefix_seek_ && mem_.prefix_bloom_ &&
!mem_.prefix_bloom_->MayContain(
mem_.prefix_extractor_->Transform(ExtractUserKey(k)))) {
if (bloom_ != nullptr &&
!bloom_->MayContain(prefix_extractor_->Transform(ExtractUserKey(k)))) {
valid_ = false;
return;
}
@ -207,9 +210,9 @@ class MemTableIterator: public Iterator {
virtual Status status() const { return Status::OK(); }
private:
const MemTable& mem_;
DynamicBloom* bloom_;
const SliceTransform* const prefix_extractor_;
std::shared_ptr<MemTableRep::Iterator> iter_;
bool dynamic_prefix_seek_;
bool valid_;
// No copying allowed

4
db/merge_helper.cc
View File

@ -40,12 +40,12 @@ void MergeHelper::MergeUntil(Iterator* iter, SequenceNumber stop_before,
ParseInternalKey(keys_.back(), &orig_ikey);
bool hit_the_next_user_key = false;
ParsedInternalKey ikey;
std::string merge_result; // Temporary value for merge results
if (steps) {
++(*steps);
}
for (iter->Next(); iter->Valid(); iter->Next()) {
ParsedInternalKey ikey;
assert(operands_.size() >= 1); // Should be invariants!
assert(keys_.size() == operands_.size());
@ -194,7 +194,7 @@ void MergeHelper::MergeUntil(Iterator* iter, SequenceNumber stop_before,
if (operands_.size() >= 2 &&
operands_.size() >= min_partial_merge_operands_ &&
user_merge_operator_->PartialMergeMulti(
ikey.user_key,
orig_ikey.user_key,
std::deque<Slice>(operands_.begin(), operands_.end()),
&merge_result, logger_)) {
// Merging of operands (associative merge) was successful.

2
db/merge_operator.cc
View File

@ -23,7 +23,7 @@ bool MergeOperator::PartialMergeMulti(const Slice& key,
std::string temp_value;
Slice temp_slice(operand_list[0]);
for (int i = 1; i < operand_list.size(); ++i) {
for (size_t i = 1; i < operand_list.size(); ++i) {
auto& operand = operand_list[i];
if (!PartialMerge(key, temp_slice, operand, &temp_value, logger)) {
return false;

26
db/table_cache.cc
View File

@ -187,17 +187,27 @@ Status TableCache::GetTableProperties(
bool TableCache::PrefixMayMatch(const ReadOptions& options,
const InternalKeyComparator& icomparator,
uint64_t file_number, uint64_t file_size,
const FileMetaData& file_meta,
const Slice& internal_prefix, bool* table_io) {
Cache::Handle* handle = nullptr;
Status s = FindTable(storage_options_, icomparator, file_number, file_size,
&handle, table_io);
bool may_match = true;
if (s.ok()) {
TableReader* t = GetTableReaderFromHandle(handle);
may_match = t->PrefixMayMatch(internal_prefix);
ReleaseHandle(handle);
auto table_handle = file_meta.table_reader_handle;
if (table_handle == nullptr) {
// Need to get table handle from file number
Status s = FindTable(storage_options_, icomparator, file_meta.number,
file_meta.file_size, &table_handle, table_io);
if (!s.ok()) {
return may_match;
}
}
auto table = GetTableReaderFromHandle(table_handle);
may_match = table->PrefixMayMatch(internal_prefix);
if (file_meta.table_reader_handle == nullptr) {
// Need to release handle if it is generated from here.
ReleaseHandle(table_handle);
}
return may_match;
}

2
db/table_cache.h
View File

@ -58,7 +58,7 @@ class TableCache {
// the table index or blooms are not in memory, this may cause an I/O
bool PrefixMayMatch(const ReadOptions& options,
const InternalKeyComparator& internal_comparator,
uint64_t file_number, uint64_t file_size,
const FileMetaData& file_meta,
const Slice& internal_prefix, bool* table_io);
// Evict any entry for the specified file number

15
db/version_edit.cc
View File

@ -30,7 +30,6 @@ enum Tag {
// these are new formats divergent from open source leveldb
kNewFile2 = 100, // store smallest & largest seqno
kVersionNumber = 101, // manifest version number, available after 2.8
kColumnFamily = 200, // specify column family for version edit
kColumnFamilyAdd = 201,
@ -39,7 +38,6 @@ enum Tag {
};
void VersionEdit::Clear() {
version_number_ = 0;
comparator_.clear();
max_level_ = 0;
log_number_ = 0;
@ -47,7 +45,6 @@ void VersionEdit::Clear() {
last_sequence_ = 0;
next_file_number_ = 0;
max_column_family_ = 0;
has_version_number_ = false;
has_comparator_ = false;
has_log_number_ = false;
has_prev_log_number_ = false;
@ -63,10 +60,6 @@ void VersionEdit::Clear() {
}
void VersionEdit::EncodeTo(std::string* dst) const {
if (has_version_number_) {
PutVarint32(dst, kVersionNumber);
PutVarint32(dst, version_number_);
}
if (has_comparator_) {
PutVarint32(dst, kComparator);
PutLengthPrefixedSlice(dst, comparator_);
@ -164,14 +157,6 @@ Status VersionEdit::DecodeFrom(const Slice& src) {
while (msg == nullptr && GetVarint32(&input, &tag)) {
switch (tag) {
case kVersionNumber:
if (GetVarint32(&input, &version_number_)) {
has_version_number_ = true;
} else {
msg = "version number";
}
break;
case kComparator:
if (GetLengthPrefixedSlice(&input, &str)) {
comparator_ = str.ToString();

10
db/version_edit.h
View File

@ -50,10 +50,6 @@ class VersionEdit {
void Clear();
void SetVersionNumber() {
has_version_number_ = true;
version_number_ = kManifestVersion;
}
void SetComparatorName(const Slice& name) {
has_comparator_ = true;
comparator_ = name.ToString();
@ -147,14 +143,12 @@ class VersionEdit {
bool GetLevel(Slice* input, int* level, const char** msg);
int max_level_;
uint32_t version_number_;
std::string comparator_;
uint64_t log_number_;
uint64_t prev_log_number_;
uint64_t next_file_number_;
uint32_t max_column_family_;
SequenceNumber last_sequence_;
bool has_version_number_;
bool has_comparator_;
bool has_log_number_;
bool has_prev_log_number_;
@ -174,10 +168,6 @@ class VersionEdit {
bool is_column_family_drop_;
bool is_column_family_add_;
std::string column_family_name_;
enum {
kManifestVersion = 1
};
};
} // namespace rocksdb

169
db/version_set.cc
View File

@ -184,18 +184,14 @@ class Version::LevelFileNumIterator : public Iterator {
}
Slice value() const {
assert(Valid());
EncodeFixed64(value_buf_, (*flist_)[index_]->number);
EncodeFixed64(value_buf_+8, (*flist_)[index_]->file_size);
return Slice(value_buf_, sizeof(value_buf_));
return Slice(reinterpret_cast<const char*>((*flist_)[index_]),
sizeof(FileMetaData));
}
virtual Status status() const { return Status::OK(); }
private:
const InternalKeyComparator icmp_;
const std::vector<FileMetaData*>* const flist_;
uint32_t index_;
// Backing store for value(). Holds the file number and size.
mutable char value_buf_[16];
};
static Iterator* GetFileIterator(void* arg, const ReadOptions& options,
@ -203,7 +199,7 @@ static Iterator* GetFileIterator(void* arg, const ReadOptions& options,
const InternalKeyComparator& icomparator,
const Slice& file_value, bool for_compaction) {
TableCache* cache = reinterpret_cast<TableCache*>(arg);
if (file_value.size() != 16) {
if (file_value.size() != sizeof(FileMetaData)) {
return NewErrorIterator(
Status::Corruption("FileReader invoked with unexpected value"));
} else {
@ -214,11 +210,12 @@ static Iterator* GetFileIterator(void* arg, const ReadOptions& options,
options_copy = options;
options_copy.prefix = nullptr;
}
FileMetaData meta(DecodeFixed64(file_value.data()),
DecodeFixed64(file_value.data() + 8));
const FileMetaData* meta_file =
reinterpret_cast<const FileMetaData*>(file_value.data());
return cache->NewIterator(
options.prefix ? options_copy : options, soptions, icomparator, meta,
nullptr /* don't need reference to table*/, for_compaction);
options.prefix ? options_copy : options, soptions, icomparator,
*meta_file, nullptr /* don't need reference to table*/, for_compaction);
}
}
@ -237,10 +234,11 @@ bool Version::PrefixMayMatch(const ReadOptions& options,
// key() will always be the biggest value for this SST?
may_match = true;
} else {
const FileMetaData* meta_file =
reinterpret_cast<const FileMetaData*>(level_iter->value().data());
may_match = cfd_->table_cache()->PrefixMayMatch(
options, cfd_->internal_comparator(),
DecodeFixed64(level_iter->value().data()),
DecodeFixed64(level_iter->value().data() + 8), internal_prefix,
options, cfd_->internal_comparator(), *meta_file, internal_prefix,
nullptr);
}
return may_match;
@ -437,17 +435,30 @@ static bool SaveValue(void* arg, const ParsedInternalKey& parsed_key,
return false;
}
static bool NewestFirst(FileMetaData* a, FileMetaData* b) {
namespace {
bool NewestFirst(FileMetaData* a, FileMetaData* b) {
return a->number > b->number;
}
static bool NewestFirstBySeqNo(FileMetaData* a, FileMetaData* b) {
if (a->smallest_seqno > b->smallest_seqno) {
assert(a->largest_seqno > b->largest_seqno);
return true;
bool NewestFirstBySeqNo(FileMetaData* a, FileMetaData* b) {
if (a->smallest_seqno != b->smallest_seqno) {
return a->smallest_seqno > b->smallest_seqno;
}
assert(a->largest_seqno <= b->largest_seqno);
return false;
if (a->largest_seqno != b->largest_seqno) {
return a->largest_seqno > b->largest_seqno;
}
// Break ties by file number
return NewestFirst(a, b);
}
bool BySmallestKey(FileMetaData* a, FileMetaData* b,
const InternalKeyComparator* cmp) {
int r = cmp->Compare(a->smallest, b->smallest);
if (r != 0) {
return (r < 0);
}
// Break ties by file number
return (a->number < b->number);
}
} // anonymous namespace
Version::Version(ColumnFamilyData* cfd, VersionSet* vset,
uint64_t version_number)
@ -1186,22 +1197,33 @@ struct VersionSet::ManifestWriter {
// Versions that contain full copies of the intermediate state.
class VersionSet::Builder {
private:
// Helper to sort by v->files_[file_number].smallest
struct BySmallestKey {
// Helper to sort v->files_
// kLevel0LevelCompaction -- NewestFirst
// kLevel0UniversalCompaction -- NewestFirstBySeqNo
// kLevelNon0 -- BySmallestKey
struct FileComparator {
enum SortMethod {
kLevel0LevelCompaction = 0,
kLevel0UniversalCompaction = 1,
kLevelNon0 = 2,
} sort_method;
const InternalKeyComparator* internal_comparator;
bool operator()(FileMetaData* f1, FileMetaData* f2) const {
int r = internal_comparator->Compare(f1->smallest, f2->smallest);
if (r != 0) {
return (r < 0);
} else {
// Break ties by file number
return (f1->number < f2->number);
switch (sort_method) {
case kLevel0LevelCompaction:
return NewestFirst(f1, f2);
case kLevel0UniversalCompaction:
return NewestFirstBySeqNo(f1, f2);
case kLevelNon0:
return BySmallestKey(f1, f2, internal_comparator);
}
assert(false);
return false;
}
};
typedef std::set<FileMetaData*, BySmallestKey> FileSet;
typedef std::set<FileMetaData*, FileComparator> FileSet;
struct LevelState {
std::set<uint64_t> deleted_files;
FileSet* added_files;
@ -1210,15 +1232,23 @@ class VersionSet::Builder {
ColumnFamilyData* cfd_;
Version* base_;
LevelState* levels_;
FileComparator level_zero_cmp_;
FileComparator level_nonzero_cmp_;
public:
Builder(ColumnFamilyData* cfd) : cfd_(cfd), base_(cfd->current()) {
base_->Ref();
levels_ = new LevelState[base_->NumberLevels()];
BySmallestKey cmp;
cmp.internal_comparator = &cfd_->internal_comparator();
for (int level = 0; level < base_->NumberLevels(); level++) {
levels_[level].added_files = new FileSet(cmp);
level_zero_cmp_.sort_method =
(cfd_->options()->compaction_style == kCompactionStyleUniversal)
? FileComparator::kLevel0UniversalCompaction
: FileComparator::kLevel0LevelCompaction;
level_nonzero_cmp_.sort_method = FileComparator::kLevelNon0;
level_nonzero_cmp_.internal_comparator = &cfd->internal_comparator();
levels_[0].added_files = new FileSet(level_zero_cmp_);
for (int level = 1; level < base_->NumberLevels(); level++) {
levels_[level].added_files = new FileSet(level_nonzero_cmp_);
}
}
@ -1251,16 +1281,25 @@ class VersionSet::Builder {
void CheckConsistency(Version* v) {
#ifndef NDEBUG
// make sure the files are sorted correctly
for (int level = 0; level < v->NumberLevels(); level++) {
// Make sure there is no overlap in levels > 0
if (level > 0) {
for (uint32_t i = 1; i < v->files_[level].size(); i++) {
const InternalKey& prev_end = v->files_[level][i-1]->largest;
const InternalKey& this_begin = v->files_[level][i]->smallest;
if (cfd_->internal_comparator().Compare(prev_end, this_begin) >= 0) {
for (size_t i = 1; i < v->files_[level].size(); i++) {
auto f1 = v->files_[level][i - 1];
auto f2 = v->files_[level][i];
if (level == 0) {
assert(level_zero_cmp_(f1, f2));
if (cfd_->options()->compaction_style == kCompactionStyleUniversal) {
assert(f1->largest_seqno > f2->largest_seqno);
}
} else {
assert(level_nonzero_cmp_(f1, f2));
// Make sure there is no overlap in levels > 0
if (cfd_->internal_comparator().Compare(f1->largest, f2->smallest) >=
0) {
fprintf(stderr, "overlapping ranges in same level %s vs. %s\n",
prev_end.DebugString().c_str(),
this_begin.DebugString().c_str());
(f1->largest).DebugString().c_str(),
(f2->smallest).DebugString().c_str());
abort();
}
}
@ -1359,9 +1398,9 @@ class VersionSet::Builder {
void SaveTo(Version* v) {
CheckConsistency(base_);
CheckConsistency(v);
BySmallestKey cmp;
cmp.internal_comparator = &cfd_->internal_comparator();
for (int level = 0; level < base_->NumberLevels(); level++) {
const auto& cmp = (level == 0) ? level_zero_cmp_ : level_nonzero_cmp_;
// Merge the set of added files with the set of pre-existing files.
// Drop any deleted files. Store the result in *v.
const auto& base_files = base_->files_[level];
@ -1387,13 +1426,6 @@ class VersionSet::Builder {
}
}
// TODO(icanadi) do it in the loop above, which already sorts the files
// Pre-sort level0 for Get()
if (cfd_->options()->compaction_style == kCompactionStyleUniversal) {
std::sort(v->files_[0].begin(), v->files_[0].end(), NewestFirstBySeqNo);
} else {
std::sort(v->files_[0].begin(), v->files_[0].end(), NewestFirst);
}
CheckConsistency(v);
}
@ -1585,6 +1617,8 @@ Status VersionSet::LogAndApply(ColumnFamilyData* column_family_data,
DescriptorFileName(dbname_, pending_manifest_file_number_),
&descriptor_file, env_->OptimizeForManifestWrite(storage_options_));
if (s.ok()) {
descriptor_file->SetPreallocationBlockSize(
options_->manifest_preallocation_size);
descriptor_log_.reset(new log::Writer(std::move(descriptor_file)));
s = WriteSnapshot(descriptor_log_.get());
}
@ -1806,8 +1840,6 @@ Status VersionSet::Recover(
return s;
}
bool have_version_number = false;
bool log_number_decrease = false;
bool have_log_number = false;
bool have_prev_log_number = false;
bool have_next_file = false;
@ -1924,7 +1956,9 @@ Status VersionSet::Recover(
if (cfd != nullptr) {
if (edit.has_log_number_) {
if (cfd->GetLogNumber() > edit.log_number_) {
log_number_decrease = true;
Log(options_->info_log,
"MANIFEST corruption detected, but ignored - Log numbers in "
"records NOT monotonically increasing");
} else {
cfd->SetLogNumber(edit.log_number_);
have_log_number = true;
@ -1939,10 +1973,6 @@ Status VersionSet::Recover(
}
}
if (edit.has_version_number_) {
have_version_number = true;
}
if (edit.has_prev_log_number_) {
prev_log_number = edit.prev_log_number_;
have_prev_log_number = true;
@ -1962,23 +1992,6 @@ Status VersionSet::Recover(
have_last_sequence = true;
}
}
if (s.ok() && log_number_decrease) {
// Since release 2.8, version number is added into MANIFEST file.
// Prior release 2.8, a bug in LogAndApply() can cause log_number
// to be smaller than the one from previous edit. To ensure backward
// compatibility, only fail for MANIFEST genearated by release 2.8
// and after.
if (have_version_number) {
s = Status::Corruption(
"MANIFEST corruption - Log numbers in records NOT "
"monotonically increasing");
} else {
Log(options_->info_log,
"MANIFEST corruption detected, but ignored - Log numbers in "
"records NOT monotonically increasing");
}
}
}
if (s.ok()) {
@ -2402,8 +2415,6 @@ Status VersionSet::WriteSnapshot(log::Writer* log) {
// WARNING: This method doesn't hold a mutex!!
bool first_record = false;
// This is done without DB mutex lock held, but only within single-threaded
// LogAndApply. Column family manipulations can only happen within LogAndApply
// (the same single thread), so we're safe to iterate.
@ -2411,10 +2422,6 @@ Status VersionSet::WriteSnapshot(log::Writer* log) {
{
// Store column family info
VersionEdit edit;
if (first_record) {
edit.SetVersionNumber();
first_record = false;
}
if (cfd->GetID() != 0) {
// default column family is always there,
// no need to explicitly write it

6
include/rocksdb/compaction_filter.h
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@ -139,6 +139,7 @@ class DefaultCompactionFilterFactory : public CompactionFilterFactory {
//
class CompactionFilterFactoryV2 {
public:
// NOTE: CompactionFilterFactoryV2 will not delete prefix_extractor
explicit CompactionFilterFactoryV2(const SliceTransform* prefix_extractor)
: prefix_extractor_(prefix_extractor) { }
@ -169,9 +170,8 @@ class CompactionFilterFactoryV2 {
// return any filter
class DefaultCompactionFilterFactoryV2 : public CompactionFilterFactoryV2 {
public:
explicit DefaultCompactionFilterFactoryV2(
const SliceTransform* prefix_extractor)
: CompactionFilterFactoryV2(prefix_extractor) { }
explicit DefaultCompactionFilterFactoryV2()
: CompactionFilterFactoryV2(nullptr) { }
virtual std::unique_ptr<CompactionFilterV2>
CreateCompactionFilterV2(

19
include/rocksdb/options.h
View File

@ -127,6 +127,8 @@ struct ColumnFamilyOptions {
// Version TWO of the compaction_filter_factory
// It supports rolling compaction
//
// Default: a factory that doesn't provide any object
std::shared_ptr<CompactionFilterFactoryV2> compaction_filter_factory_v2;
// -------------------
@ -493,6 +495,17 @@ struct ColumnFamilyOptions {
// number of hash probes per key
uint32_t memtable_prefix_bloom_probes;
// Control locality of bloom filter probes to improve cache miss rate.
// This option only applies to memtable prefix bloom and plaintable
// prefix bloom. It essentially limits the max number of cache lines each
// bloom filter check can touch.
// This optimization is turned off when set to 0. The number should never
// be greater than number of probes. This option can boost performance
// for in-memory workload but should use with care since it can cause
// higher false positive rate.
// Default: 0
uint32_t bloom_locality;
// Maximum number of successive merge operations on a key in the memtable.
//
// When a merge operation is added to the memtable and the maximum number of
@ -538,7 +551,7 @@ struct DBOptions {
// If any of the writes to the database fails (Put, Delete, Merge, Write),
// the database will switch to read-only mode and fail all other
// Write operations.
// Default: false
// Default: true
bool paranoid_checks;
// Use the specified object to interact with the environment,
@ -559,7 +572,7 @@ struct DBOptions {
// files opened are always kept open. You can estimate number of files based
// on target_file_size_base and target_file_size_multiplier for level-based
// compaction. For universal-style compaction, you can usually set it to -1.
// Default: 1000
// Default: 5000
int max_open_files;
// If non-null, then we should collect metrics about database operations
@ -696,7 +709,7 @@ struct DBOptions {
// Allow the OS to mmap file for reading sst tables. Default: false
bool allow_mmap_reads;
// Allow the OS to mmap file for writing. Default: true
// Allow the OS to mmap file for writing. Default: false
bool allow_mmap_writes;
// Disable child process inherit open files. Default: true

103
include/utilities/geo_db.h Normal file
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@ -0,0 +1,103 @@
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#pragma once
#include <string>
#include <vector>
#include "utilities/stackable_db.h"
#include "rocksdb/status.h"
namespace rocksdb {
//
// Configurable options needed for setting up a Geo database
//
struct GeoDBOptions {
// Backup info and error messages will be written to info_log
// if non-nullptr.
// Default: nullptr
Logger* info_log;
explicit GeoDBOptions(Logger* _info_log = nullptr):info_log(_info_log) { }
};
//
// A position in the earth's geoid
//
class GeoPosition {
public:
double latitude;
double longitude;
explicit GeoPosition(double la = 0, double lo = 0) :
latitude(la), longitude(lo) {
}
};
//
// Description of an object on the Geoid. It is located by a GPS location,
// and is identified by the id. The value associated with this object is
// an opaque string 'value'. Different objects identified by unique id's
// can have the same gps-location associated with them.
//
class GeoObject {
public:
GeoPosition position;
std::string id;
std::string value;
GeoObject() {}
GeoObject(const GeoPosition& pos, const std::string& i,
const std::string& val) :
position(pos), id(i), value(val) {
}
};
//
// Stack your DB with GeoDB to be able to get geo-spatial support
//
class GeoDB : public StackableDB {
public:
// GeoDBOptions have to be the same as the ones used in a previous
// incarnation of the DB
//
// GeoDB owns the pointer `DB* db` now. You should not delete it or
// use it after the invocation of GeoDB
// GeoDB(DB* db, const GeoDBOptions& options) : StackableDB(db) {}
GeoDB(DB* db, const GeoDBOptions& options) : StackableDB(db) {}
virtual ~GeoDB() {}
// Insert a new object into the location database. The object is
// uniquely identified by the id. If an object with the same id already
// exists in the db, then the old one is overwritten by the new
// object being inserted here.
virtual Status Insert(const GeoObject& object) = 0;
// Retrieve the value of the object located at the specified GPS
// location and is identified by the 'id'.
virtual Status GetByPosition(const GeoPosition& pos,
const Slice& id, std::string* value) = 0;
// Retrieve the value of the object identified by the 'id'. This method
// could be potentially slower than GetByPosition
virtual Status GetById(const Slice& id, GeoObject* object) = 0;
// Delete the specified object
virtual Status Remove(const Slice& id) = 0;
// Returns a list of all items within a circular radius from the
// specified gps location. If 'number_of_values' is specified,
// then this call returns at most that many number of objects.
// The radius is specified in 'meters'.
virtual Status SearchRadial(const GeoPosition& pos,
double radius,
std::vector<GeoObject>* values,
int number_of_values = INT_MAX) = 0;
};
} // namespace rocksdb

17
java/Makefile Normal file
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@ -0,0 +1,17 @@
NATIVE_JAVA_CLASSES = org.rocksdb.RocksDB
NATIVE_INCLUDE = ./include
ROCKSDB_JAR = rocksdbjni.jar
clean:
-find . -name "*.class" -exec rm {} \;
-find . -name "hs*.log" -exec rm {} \;
rm -f $(ROCKSDB_JAR)
java:
javac org/rocksdb/*.java
jar -cf $(ROCKSDB_JAR) org/rocksdb/*.class
javah -d $(NATIVE_INCLUDE) -jni $(NATIVE_JAVA_CLASSES)
sample:
javac -cp $(ROCKSDB_JAR) RocksDBSample.java
java -ea -Djava.library.path=.:../ -cp ".:./*" RocksDBSample /tmp/rocksdbjni/

79
java/RocksDBSample.java Normal file
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@ -0,0 +1,79 @@
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
import java.util.*;
import java.lang.*;
import org.rocksdb.*;
import java.io.IOException;
public class RocksDBSample {
static {
System.loadLibrary("rocksdbjni");
}
public static void main(String[] args) {
if (args.length < 1) {
System.out.println("usage: RocksDBSample db_path");
return;
}
String db_path = args[0];
System.out.println("RocksDBSample");
try {
RocksDB db = RocksDB.open(db_path);
db.put("hello".getBytes(), "world".getBytes());
byte[] value = db.get("hello".getBytes());
System.out.format("Get('hello') = %s\n",
new String(value));
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
db.put(String.format("%dx%d", i, j).getBytes(),
String.format("%d", i * j).getBytes());
}
}
for (int i = 1; i <= 9; ++i) {
for (int j = 1; j <= 9; ++j) {
System.out.format("%s ", new String(db.get(
String.format("%dx%d", i, j).getBytes())));
}
System.out.println("");
}
value = db.get("1x1".getBytes());
assert(value != null);
value = db.get("world".getBytes());
assert(value == null);
byte[] testKey = "asdf".getBytes();
byte[] testValue =
"asdfghjkl;'?><MNBVCXZQWERTYUIOP{+_)(*&^%$#@".getBytes();
db.put(testKey, testValue);
byte[] testResult = db.get(testKey);
assert(testResult != null);
assert(Arrays.equals(testValue, testResult));
assert(new String(testValue).equals(new String(testResult)));
byte[] insufficientArray = new byte[10];
byte[] enoughArray = new byte[50];
int len;
len = db.get(testKey, insufficientArray);
assert(len > insufficientArray.length);
len = db.get("asdfjkl;".getBytes(), enoughArray);
assert(len == RocksDB.NOT_FOUND);
len = db.get(testKey, enoughArray);
assert(len == testValue.length);
try {
db.close();
} catch (IOException e) {
System.err.println(e);
}
} catch (RocksDBException e) {
System.err.println(e);
}
}
}

103
java/org/rocksdb/RocksDB.java Normal file
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@ -0,0 +1,103 @@
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
package org.rocksdb;
import java.lang.*;
import java.util.*;
import java.io.Closeable;
import java.io.IOException;
/**
* A RocksDB is a persistent ordered map from keys to values. It is safe for
* concurrent access from multiple threads without any external synchronization.
* All methods of this class could potentially throw RocksDBException, which
* indicates sth wrong at the rocksdb library side and the call failed.
*/
public class RocksDB implements Closeable {
public static final int NOT_FOUND = -1;
/**
* The factory constructor of RocksDB that opens a RocksDB instance given
* the path to the database.
*
* @param path the path to the rocksdb.
* @param status an out value indicating the status of the Open().
* @return a rocksdb instance on success, null if the specified rocksdb can
* not be opened.
*/
public static RocksDB open(String path) throws RocksDBException {
RocksDB db = new RocksDB();
db.open0(path);
return db;
}
@Override public void close() throws IOException {
if (nativeHandle != 0) {
close0();
}
}
/**
* Set the database entry for "key" to "value".
*
* @param key the specified key to be inserted.
* @param value the value associated with the specified key.
*/
public void put(byte[] key, byte[] value) throws RocksDBException {
put(key, key.length, value, value.length);
}
/**
* Get the value associated with the specified key.
*
* @param key the key to retrieve the value.
* @param value the out-value to receive the retrieved value.
* @return The size of the actual value that matches the specified
* {@code key} in byte. If the return value is greater than the
* length of {@code value}, then it indicates that the size of the
* input buffer {@code value} is insufficient and partial result will
* be returned. RocksDB.NOT_FOUND will be returned if the value not
* found.
*/
public int get(byte[] key, byte[] value) throws RocksDBException {
return get(key, key.length, value, value.length);
}
/**
* The simplified version of get which returns a new byte array storing
* the value associated with the specified input key if any. null will be
* returned if the specified key is not found.
*
* @param key the key retrieve the value.
* @return a byte array storing the value associated with the input key if
* any. null if it does not find the specified key.
*
* @see RocksDBException
*/
public byte[] get(byte[] key) throws RocksDBException {
return get(key, key.length);
}
/**
* Private constructor.
*/
private RocksDB() {
nativeHandle = -1;
}
// native methods
private native void open0(String path) throws RocksDBException;
private native void put(
byte[] key, int keyLen,
byte[] value, int valueLen) throws RocksDBException;
private native int get(
byte[] key, int keyLen,
byte[] value, int valueLen) throws RocksDBException;
private native byte[] get(
byte[] key, int keyLen) throws RocksDBException;
private native void close0();
private long nativeHandle;
}

24
java/org/rocksdb/RocksDBException.java Normal file
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@ -0,0 +1,24 @@
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
package org.rocksdb;
import java.lang.*;
import java.util.*;
/**
* A RocksDBException encapsulates the error of an operation. This exception
* type is used to describe an internal error from the c++ rocksdb library.
*/
public class RocksDBException extends Exception {
/**
* The private construct used by a set of public static factory method.
*
* @param msg the specified error message.
*/
public RocksDBException(String msg) {
super(msg);
}
}

81
java/rocksjni/portal.h Normal file
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@ -0,0 +1,81 @@
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
// This file is designed for caching those frequently used IDs and provide
// efficient portal (i.e, a set of static functions) to access java code
// from c++.
#ifndef JAVA_ROCKSJNI_PORTAL_H_
#define JAVA_ROCKSJNI_PORTAL_H_
#include <jni.h>
#include "rocksdb/db.h"
namespace rocksdb {
// The portal class for org.rocksdb.RocksDB
class RocksDBJni {
public:
// Get the java class id of org.rocksdb.RocksDB.
static jclass getJClass(JNIEnv* env) {
static jclass jclazz = env->FindClass("org/rocksdb/RocksDB");
assert(jclazz != nullptr);
return jclazz;
}
// Get the field id of the member variable of org.rocksdb.RocksDB
// that stores the pointer to rocksdb::DB.
static jfieldID getHandleFieldID(JNIEnv* env) {
static jfieldID fid = env->GetFieldID(
getJClass(env), "nativeHandle", "J");
assert(fid != nullptr);
return fid;
}
// Get the pointer to rocksdb::DB of the specified org.rocksdb.RocksDB.
static rocksdb::DB* getHandle(JNIEnv* env, jobject jdb) {
return reinterpret_cast<rocksdb::DB*>(
env->GetLongField(jdb, getHandleFieldID(env)));
}
// Pass the rocksdb::DB pointer to the java side.
static void setHandle(JNIEnv* env, jobject jdb, rocksdb::DB* db) {
env->SetLongField(
jdb, getHandleFieldID(env),
reinterpret_cast<jlong>(db));
}
};
// The portal class for org.rocksdb.RocksDBException
class RocksDBExceptionJni {
public:
// Get the jclass of org.rocksdb.RocksDBException
static jclass getJClass(JNIEnv* env) {
static jclass jclazz = env->FindClass("org/rocksdb/RocksDBException");
assert(jclazz != nullptr);
return jclazz;
}
// Create and throw a java exception by converting the input
// Status to an RocksDBException.
//
// In case s.ok() is true, then this function will not throw any
// exception.
static void ThrowNew(JNIEnv* env, Status s) {
if (s.ok()) {
return;
}
jstring msg = env->NewStringUTF(s.ToString().c_str());
// get the constructor id of org.rocksdb.RocksDBException
static jmethodID mid = env->GetMethodID(
getJClass(env), "<init>", "(Ljava/lang/String;)V");
assert(mid != nullptr);
env->Throw((jthrowable)env->NewObject(getJClass(env), mid, msg));
}
};
} // namespace rocksdb
#endif // JAVA_ROCKSJNI_PORTAL_H_

185
java/rocksjni/rocksjni.cc Normal file
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@ -0,0 +1,185 @@
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// This file implements the "bridge" between Java and C++ and enables
// calling c++ rocksdb::DB methods from Java side.
#include <stdio.h>
#include <stdlib.h>
#include <jni.h>
#include <string>
#include "include/org_rocksdb_RocksDB.h"
#include "rocksjni/portal.h"
#include "rocksdb/db.h"
/*
* Class: org_rocksdb_RocksDB
* Method: open0
* Signature: (Ljava/lang/String;)V
*/
void Java_org_rocksdb_RocksDB_open0(
JNIEnv* env, jobject java_db, jstring jdb_path) {
rocksdb::DB* db;
rocksdb::Options options;
options.create_if_missing = true;
jboolean isCopy = false;
const char* db_path = env->GetStringUTFChars(jdb_path, &isCopy);
rocksdb::Status s = rocksdb::DB::Open(options, db_path, &db);
env->ReleaseStringUTFChars(jdb_path, db_path);
if (s.ok()) {
rocksdb::RocksDBJni::setHandle(env, java_db, db);
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: put
* Signature: ([BI[BI)V
*/
void Java_org_rocksdb_RocksDB_put(
JNIEnv* env, jobject jdb,
jbyteArray jkey, jint jkey_len,
jbyteArray jvalue, jint jvalue_len) {
rocksdb::DB* db = rocksdb::RocksDBJni::getHandle(env, jdb);
jboolean isCopy;
jbyte* key = env->GetByteArrayElements(jkey, &isCopy);
jbyte* value = env->GetByteArrayElements(jvalue, &isCopy);
rocksdb::Slice key_slice(
reinterpret_cast<char*>(key), jkey_len);
rocksdb::Slice value_slice(
reinterpret_cast<char*>(value), jvalue_len);
rocksdb::Status s = db->Put(
rocksdb::WriteOptions(), key_slice, value_slice);
// trigger java unref on key and value.
// by passing JNI_ABORT, it will simply release the reference without
// copying the result back to the java byte array.
env->ReleaseByteArrayElements(jkey, key, JNI_ABORT);
env->ReleaseByteArrayElements(jvalue, value, JNI_ABORT);
if (s.ok()) {
return;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: ([BI)[B
*/
jbyteArray Java_org_rocksdb_RocksDB_get___3BI(
JNIEnv* env, jobject jdb, jbyteArray jkey, jint jkey_len) {
rocksdb::DB* db = rocksdb::RocksDBJni::getHandle(env, jdb);
jboolean isCopy;
jbyte* key = env->GetByteArrayElements(jkey, &isCopy);
rocksdb::Slice key_slice(
reinterpret_cast<char*>(key), jkey_len);
std::string value;
rocksdb::Status s = db->Get(
rocksdb::ReadOptions(),
key_slice, &value);
// trigger java unref on key.
// by passing JNI_ABORT, it will simply release the reference without
// copying the result back to the java byte array.
env->ReleaseByteArrayElements(jkey, key, JNI_ABORT);
if (s.IsNotFound()) {
return nullptr;
}
if (s.ok()) {
jbyteArray jvalue = env->NewByteArray(value.size());
env->SetByteArrayRegion(
jvalue, 0, value.size(),
reinterpret_cast<const jbyte*>(value.c_str()));
return jvalue;
}
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
return nullptr;
}
/*
* Class: org_rocksdb_RocksDB
* Method: get
* Signature: ([BI[BI)I
*/
jint Java_org_rocksdb_RocksDB_get___3BI_3BI(
JNIEnv* env, jobject jdb,
jbyteArray jkey, jint jkey_len,
jbyteArray jvalue, jint jvalue_len) {
static const int kNotFound = -1;
static const int kStatusError = -2;
rocksdb::DB* db = rocksdb::RocksDBJni::getHandle(env, jdb);
jboolean isCopy;
jbyte* key = env->GetByteArrayElements(jkey, &isCopy);
jbyte* value = env->GetByteArrayElements(jvalue, &isCopy);
rocksdb::Slice key_slice(
reinterpret_cast<char*>(key), jkey_len);
// TODO(yhchiang): we might save one memory allocation here by adding
// a DB::Get() function which takes preallocated jbyte* as input.
std::string cvalue;
rocksdb::Status s = db->Get(
rocksdb::ReadOptions(), key_slice, &cvalue);
// trigger java unref on key.
// by passing JNI_ABORT, it will simply release the reference without
// copying the result back to the java byte array.
env->ReleaseByteArrayElements(jkey, key, JNI_ABORT);
if (s.IsNotFound()) {
env->ReleaseByteArrayElements(jvalue, value, JNI_ABORT);
return kNotFound;
} else if (!s.ok()) {
// Here since we are throwing a Java exception from c++ side.
// As a result, c++ does not know calling this function will in fact
// throwing an exception. As a result, the execution flow will
// not stop here, and codes after this throw will still be
// executed.
rocksdb::RocksDBExceptionJni::ThrowNew(env, s);
// Return a dummy const value to avoid compilation error, although
// java side might not have a chance to get the return value :)
return kStatusError;
}
int cvalue_len = static_cast<int>(cvalue.size());
int length = std::min(jvalue_len, cvalue_len);
memcpy(value, cvalue.c_str(), length);
env->ReleaseByteArrayElements(jvalue, value, JNI_COMMIT);
if (cvalue_len > length) {
return static_cast<jint>(cvalue_len);
}
return length;
}
/*
* Class: org_rocksdb_RocksDB
* Method: close0
* Signature: ()V
*/
void Java_org_rocksdb_RocksDB_close0(
JNIEnv* env, jobject java_db) {
rocksdb::DB* db = rocksdb::RocksDBJni::getHandle(env, java_db);
delete db;
db = nullptr;
rocksdb::RocksDBJni::setHandle(env, java_db, db);
}

27
port/port_posix.cc
View File

@ -11,6 +11,7 @@
#include <cstdlib>
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include "util/logging.h"
@ -45,9 +46,25 @@ Mutex::Mutex(bool adaptive) {
Mutex::~Mutex() { PthreadCall("destroy mutex", pthread_mutex_destroy(&mu_)); }
void Mutex::Lock() { PthreadCall("lock", pthread_mutex_lock(&mu_)); }
void Mutex::Lock() {
PthreadCall("lock", pthread_mutex_lock(&mu_));
#ifndef NDEBUG
locked_ = true;
#endif
}
void Mutex::Unlock() { PthreadCall("unlock", pthread_mutex_unlock(&mu_)); }
void Mutex::Unlock() {
#ifndef NDEBUG
locked_ = false;
#endif
PthreadCall("unlock", pthread_mutex_unlock(&mu_));
}
void Mutex::AssertHeld() {
#ifndef NDEBUG
assert(locked_);
#endif
}
CondVar::CondVar(Mutex* mu)
: mu_(mu) {
@ -57,7 +74,13 @@ CondVar::CondVar(Mutex* mu)
CondVar::~CondVar() { PthreadCall("destroy cv", pthread_cond_destroy(&cv_)); }
void CondVar::Wait() {
#ifndef NDEBUG
mu_->locked_ = false;
#endif
PthreadCall("wait", pthread_cond_wait(&cv_, &mu_->mu_));
#ifndef NDEBUG
mu_->locked_ = true;
#endif
}
void CondVar::Signal() {

9
port/port_posix.h
View File

@ -97,11 +97,16 @@ class Mutex {
void Lock();
void Unlock();
void AssertHeld() { }
// this will assert if the mutex is not locked
// it does NOT verify that mutex is held by a calling thread
void AssertHeld();
private:
friend class CondVar;
pthread_mutex_t mu_;
#ifndef NDEBUG
bool locked_;
#endif
// No copying
Mutex(const Mutex&);
@ -475,6 +480,8 @@ inline bool GetHeapProfile(void (*func)(void *, const char *, int), void *arg) {
return false;
}
#define CACHE_LINE_SIZE 64U
} // namespace port
} // namespace rocksdb

4
table/plain_table_reader.cc
View File

@ -270,7 +270,7 @@ void PlainTableReader::AllocateIndexAndBloom(int num_prefixes) {
if (options_.prefix_extractor != nullptr) {
uint32_t bloom_total_bits = num_prefixes * kBloomBitsPerKey;
if (bloom_total_bits > 0) {
bloom_.reset(new DynamicBloom(bloom_total_bits));
bloom_.reset(new DynamicBloom(bloom_total_bits, options_.bloom_locality));
}
}
@ -388,7 +388,7 @@ Status PlainTableReader::PopulateIndex() {
if (IsTotalOrderMode()) {
uint32_t num_bloom_bits = table_properties_->num_entries * kBloomBitsPerKey;
if (num_bloom_bits > 0) {
bloom_.reset(new DynamicBloom(num_bloom_bits));
bloom_.reset(new DynamicBloom(num_bloom_bits, options_.bloom_locality));
}
}

38
util/dynamic_bloom.cc
View File

@ -5,6 +5,9 @@
#include "dynamic_bloom.h"
#include <algorithm>
#include "port/port.h"
#include "rocksdb/slice.h"
#include "util/hash.h"
@ -17,20 +20,31 @@ static uint32_t BloomHash(const Slice& key) {
}
DynamicBloom::DynamicBloom(uint32_t total_bits,
uint32_t (*hash_func)(const Slice& key),
uint32_t num_probes)
: hash_func_(hash_func),
kTotalBits((total_bits + 7) / 8 * 8),
kNumProbes(num_probes) {
assert(hash_func_);
uint32_t cl_per_block,
uint32_t num_probes,
uint32_t (*hash_func)(const Slice& key))
: kBlocked(cl_per_block > 0),
kBitsPerBlock(std::min(cl_per_block, num_probes) * CACHE_LINE_SIZE * 8),
kTotalBits((kBlocked ? (total_bits + kBitsPerBlock - 1) / kBitsPerBlock
* kBitsPerBlock :
total_bits + 7) / 8 * 8),
kNumBlocks(kBlocked ? kTotalBits / kBitsPerBlock : 1),
kNumProbes(num_probes),
hash_func_(hash_func == nullptr ? &BloomHash : hash_func) {
assert(kBlocked ? kTotalBits > 0 : kTotalBits >= kBitsPerBlock);
assert(kNumProbes > 0);
assert(kTotalBits > 0);
data_.reset(new unsigned char[kTotalBits / 8]());
}
DynamicBloom::DynamicBloom(uint32_t total_bits,
uint32_t num_probes)
: DynamicBloom(total_bits, &BloomHash, num_probes) {
uint32_t sz = kTotalBits / 8;
if (kBlocked) {
sz += CACHE_LINE_SIZE - 1;
}
raw_ = new unsigned char[sz]();
if (kBlocked && (reinterpret_cast<uint64_t>(raw_) % CACHE_LINE_SIZE)) {
data_ = raw_ + CACHE_LINE_SIZE -
reinterpret_cast<uint64_t>(raw_) % CACHE_LINE_SIZE;
} else {
data_ = raw_;
}
}
} // rocksdb

61
util/dynamic_bloom.h
View File

@ -15,13 +15,17 @@ class Slice;
class DynamicBloom {
public:
// total_bits: fixed total bits for the bloom
// hash_func: customized hash function
// num_probes: number of hash probes for a single key
DynamicBloom(uint32_t total_bits,
uint32_t (*hash_func)(const Slice& key),
uint32_t num_probes = 6);
// cl_per_block: block size in cache lines. When this is non-zero, a
// query/set is done within a block to improve cache locality.
// hash_func: customized hash function
explicit DynamicBloom(uint32_t total_bits, uint32_t cl_per_block = 0,
uint32_t num_probes = 6,
uint32_t (*hash_func)(const Slice& key) = nullptr);
explicit DynamicBloom(uint32_t total_bits, uint32_t num_probes = 6);
~DynamicBloom() {
delete[] raw_;
}
// Assuming single threaded access to this function.
void Add(const Slice& key);
@ -36,10 +40,15 @@ class DynamicBloom {
bool MayContainHash(uint32_t hash);
private:
uint32_t (*hash_func_)(const Slice& key);
const bool kBlocked;
const uint32_t kBitsPerBlock;
const uint32_t kTotalBits;
const uint32_t kNumBlocks;
const uint32_t kNumProbes;
std::unique_ptr<unsigned char[]> data_;
uint32_t (*hash_func_)(const Slice& key);
unsigned char* data_;
unsigned char* raw_;
};
inline void DynamicBloom::Add(const Slice& key) { AddHash(hash_func_(key)); }
@ -50,22 +59,42 @@ inline bool DynamicBloom::MayContain(const Slice& key) {
inline bool DynamicBloom::MayContainHash(uint32_t h) {
const uint32_t delta = (h >> 17) | (h << 15); // Rotate right 17 bits
for (uint32_t i = 0; i < kNumProbes; i++) {
const uint32_t bitpos = h % kTotalBits;
if (((data_[bitpos / 8]) & (1 << (bitpos % 8))) == 0) {
return false;
if (kBlocked) {
uint32_t b = ((h >> 11 | (h << 21)) % kNumBlocks) * kBitsPerBlock;
for (uint32_t i = 0; i < kNumProbes; ++i) {
const uint32_t bitpos = b + h % kBitsPerBlock;
if (((data_[bitpos / 8]) & (1 << (bitpos % 8))) == 0) {
return false;
}
h += delta;
}
} else {
for (uint32_t i = 0; i < kNumProbes; ++i) {
const uint32_t bitpos = h % kTotalBits;
if (((data_[bitpos / 8]) & (1 << (bitpos % 8))) == 0) {
return false;
}
h += delta;
}
h += delta;
}
return true;
}
inline void DynamicBloom::AddHash(uint32_t h) {
const uint32_t delta = (h >> 17) | (h << 15); // Rotate right 17 bits
for (uint32_t i = 0; i < kNumProbes; i++) {
const uint32_t bitpos = h % kTotalBits;
data_[bitpos / 8] |= (1 << (bitpos % 8));
h += delta;
if (kBlocked) {
uint32_t b = ((h >> 11 | (h << 21)) % kNumBlocks) * kBitsPerBlock;
for (uint32_t i = 0; i < kNumProbes; ++i) {
const uint32_t bitpos = b + h % kBitsPerBlock;
data_[bitpos / 8] |= (1 << (bitpos % 8));
h += delta;
}
} else {
for (uint32_t i = 0; i < kNumProbes; ++i) {
const uint32_t bitpos = h % kTotalBits;
data_[bitpos / 8] |= (1 << (bitpos % 8));
h += delta;
}
}
}

197
util/dynamic_bloom_test.cc
View File

@ -3,19 +3,23 @@
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#include <algorithm>
#include <gflags/gflags.h>
#include "dynamic_bloom.h"
#include "port/port.h"
#include "util/logging.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "util/stop_watch.h"
DEFINE_int32(bits_per_key, 10, "");
DEFINE_int32(num_probes, 6, "");
DEFINE_bool(enable_perf, false, "");
namespace rocksdb {
static Slice Key(int i, char* buffer) {
static Slice Key(uint64_t i, char* buffer) {
memcpy(buffer, &i, sizeof(i));
return Slice(buffer, sizeof(i));
}
@ -24,36 +28,48 @@ class DynamicBloomTest {
};
TEST(DynamicBloomTest, EmptyFilter) {
DynamicBloom bloom(100, 2);
ASSERT_TRUE(! bloom.MayContain("hello"));
ASSERT_TRUE(! bloom.MayContain("world"));
DynamicBloom bloom1(100, 0, 2);
ASSERT_TRUE(!bloom1.MayContain("hello"));
ASSERT_TRUE(!bloom1.MayContain("world"));
DynamicBloom bloom2(CACHE_LINE_SIZE * 8 * 2 - 1, 1, 2);
ASSERT_TRUE(!bloom2.MayContain("hello"));
ASSERT_TRUE(!bloom2.MayContain("world"));
}
TEST(DynamicBloomTest, Small) {
DynamicBloom bloom(100, 2);
bloom.Add("hello");
bloom.Add("world");
ASSERT_TRUE(bloom.MayContain("hello"));
ASSERT_TRUE(bloom.MayContain("world"));
ASSERT_TRUE(! bloom.MayContain("x"));
ASSERT_TRUE(! bloom.MayContain("foo"));
DynamicBloom bloom1(100, 0, 2);
bloom1.Add("hello");
bloom1.Add("world");
ASSERT_TRUE(bloom1.MayContain("hello"));
ASSERT_TRUE(bloom1.MayContain("world"));
ASSERT_TRUE(!bloom1.MayContain("x"));
ASSERT_TRUE(!bloom1.MayContain("foo"));
DynamicBloom bloom2(CACHE_LINE_SIZE * 8 * 2 - 1, 1, 2);
bloom2.Add("hello");
bloom2.Add("world");
ASSERT_TRUE(bloom2.MayContain("hello"));
ASSERT_TRUE(bloom2.MayContain("world"));
ASSERT_TRUE(!bloom2.MayContain("x"));
ASSERT_TRUE(!bloom2.MayContain("foo"));
}
static int NextLength(int length) {
if (length < 10) {
length += 1;
} else if (length < 100) {
length += 10;
} else if (length < 1000) {
length += 100;
static uint32_t NextNum(uint32_t num) {
if (num < 10) {
num += 1;
} else if (num < 100) {
num += 10;
} else if (num < 1000) {
num += 100;
} else {
length += 1000;
num += 1000;
}
return length;
return num;
}
TEST(DynamicBloomTest, VaryingLengths) {
char buffer[sizeof(int)];
char buffer[sizeof(uint64_t)];
// Count number of filters that significantly exceed the false positive rate
int mediocre_filters = 0;
@ -62,47 +78,116 @@ TEST(DynamicBloomTest, VaryingLengths) {
fprintf(stderr, "bits_per_key: %d num_probes: %d\n",
FLAGS_bits_per_key, FLAGS_num_probes);
for (int length = 1; length <= 10000; length = NextLength(length)) {
uint32_t bloom_bits = std::max(length * FLAGS_bits_per_key, 64);
DynamicBloom bloom(bloom_bits, FLAGS_num_probes);
for (int i = 0; i < length; i++) {
bloom.Add(Key(i, buffer));
ASSERT_TRUE(bloom.MayContain(Key(i, buffer)));
}
// All added keys must match
for (int i = 0; i < length; i++) {
ASSERT_TRUE(bloom.MayContain(Key(i, buffer)))
<< "Length " << length << "; key " << i;
}
// Check false positive rate
int result = 0;
for (int i = 0; i < 10000; i++) {
if (bloom.MayContain(Key(i + 1000000000, buffer))) {
result++;
for (uint32_t cl_per_block = 0; cl_per_block < FLAGS_num_probes;
++cl_per_block) {
for (uint32_t num = 1; num <= 10000; num = NextNum(num)) {
uint32_t bloom_bits = 0;
if (cl_per_block == 0) {
bloom_bits = std::max(num * FLAGS_bits_per_key, 64U);
} else {
bloom_bits = std::max(num * FLAGS_bits_per_key,
cl_per_block * CACHE_LINE_SIZE * 8);
}
DynamicBloom bloom(bloom_bits, cl_per_block, FLAGS_num_probes);
for (uint64_t i = 0; i < num; i++) {
bloom.Add(Key(i, buffer));
ASSERT_TRUE(bloom.MayContain(Key(i, buffer)));
}
// All added keys must match
for (uint64_t i = 0; i < num; i++) {
ASSERT_TRUE(bloom.MayContain(Key(i, buffer)))
<< "Num " << num << "; key " << i;
}
// Check false positive rate
int result = 0;
for (uint64_t i = 0; i < 10000; i++) {
if (bloom.MayContain(Key(i + 1000000000, buffer))) {
result++;
}
}
double rate = result / 10000.0;
fprintf(stderr, "False positives: %5.2f%% @ num = %6u, bloom_bits = %6u, "
"cl per block = %u\n", rate*100.0, num, bloom_bits, cl_per_block);
if (rate > 0.0125)
mediocre_filters++; // Allowed, but not too often
else
good_filters++;
}
double rate = result / 10000.0;
fprintf(stderr, "False positives: %5.2f%% @ length = %6d ; \n",
rate*100.0, length);
//ASSERT_LE(rate, 0.02); // Must not be over 2%
if (rate > 0.0125)
mediocre_filters++; // Allowed, but not too often
else
good_filters++;
fprintf(stderr, "Filters: %d good, %d mediocre\n",
good_filters, mediocre_filters);
ASSERT_LE(mediocre_filters, good_filters/5);
}
fprintf(stderr, "Filters: %d good, %d mediocre\n",
good_filters, mediocre_filters);
ASSERT_LE(mediocre_filters, good_filters/5);
}
// Different bits-per-byte
TEST(DynamicBloomTest, perf) {
StopWatchNano timer(Env::Default());
if (!FLAGS_enable_perf) {
return;
}
for (uint64_t m = 1; m <= 8; ++m) {
const uint64_t num_keys = m * 8 * 1024 * 1024;
fprintf(stderr, "testing %luM keys\n", m * 8);
DynamicBloom std_bloom(num_keys * 10, 0, FLAGS_num_probes);
timer.Start();
for (uint64_t i = 1; i <= num_keys; ++i) {
std_bloom.Add(Slice(reinterpret_cast<const char*>(&i), 8));
}
uint64_t elapsed = timer.ElapsedNanos();
fprintf(stderr, "standard bloom, avg add latency %lu\n",
elapsed / num_keys);
uint64_t count = 0;
timer.Start();
for (uint64_t i = 1; i <= num_keys; ++i) {
if (std_bloom.MayContain(Slice(reinterpret_cast<const char*>(&i), 8))) {
++count;
}
}
elapsed = timer.ElapsedNanos();
fprintf(stderr, "standard bloom, avg query latency %lu\n",
elapsed / count);
ASSERT_TRUE(count == num_keys);
for (int cl_per_block = 1; cl_per_block <= FLAGS_num_probes;
++cl_per_block) {
DynamicBloom blocked_bloom(num_keys * 10, cl_per_block, FLAGS_num_probes);
timer.Start();
for (uint64_t i = 1; i <= num_keys; ++i) {
blocked_bloom.Add(Slice(reinterpret_cast<const char*>(&i), 8));
}
uint64_t elapsed = timer.ElapsedNanos();
fprintf(stderr, "blocked bloom(%d), avg add latency %lu\n",
cl_per_block, elapsed / num_keys);
uint64_t count = 0;
timer.Start();
for (uint64_t i = 1; i <= num_keys; ++i) {
if (blocked_bloom.MayContain(
Slice(reinterpret_cast<const char*>(&i), 8))) {
++count;
}
}
elapsed = timer.ElapsedNanos();
fprintf(stderr, "blocked bloom(%d), avg query latency %lu\n",
cl_per_block, elapsed / count);
ASSERT_TRUE(count == num_keys);
}
}
}
} // namespace rocksdb

5
util/env_posix.cc
View File

@ -1363,7 +1363,10 @@ class PosixEnv : public Env {
EnvOptions OptimizeForLogWrite(const EnvOptions& env_options) const {
EnvOptions optimized = env_options;
optimized.use_mmap_writes = false;
optimized.fallocate_with_keep_size = false;
// TODO(icanadi) it's faster if fallocate_with_keep_size is false, but it
// breaks TransactionLogIteratorStallAtLastRecord unit test. Fix the unit
// test and make this false
optimized.fallocate_with_keep_size = true;
return optimized;
}

4
util/env_test.cc
View File

@ -481,9 +481,9 @@ class TestLogger : public Logger {
if (new_format[0] == '[') {
// "[DEBUG] "
ASSERT_TRUE(n <= 56 + (512 - sizeof(struct timeval)));
ASSERT_TRUE(n <= 56 + (512 - static_cast<int>(sizeof(struct timeval))));
} else {
ASSERT_TRUE(n <= 48 + (512 - sizeof(struct timeval)));
ASSERT_TRUE(n <= 48 + (512 - static_cast<int>(sizeof(struct timeval))));
}
va_end(backup_ap);
}

14
util/options.cc
View File

@ -33,7 +33,7 @@ ColumnFamilyOptions::ColumnFamilyOptions()
compaction_filter_factory(std::shared_ptr<CompactionFilterFactory>(
new DefaultCompactionFilterFactory())),
compaction_filter_factory_v2(
new DefaultCompactionFilterFactoryV2(NewFixedPrefixTransform(8))),
new DefaultCompactionFilterFactoryV2()),
write_buffer_size(4 << 20),
max_write_buffer_number(2),
min_write_buffer_number_to_merge(1),
@ -47,8 +47,8 @@ ColumnFamilyOptions::ColumnFamilyOptions()
whole_key_filtering(true),
num_levels(7),
level0_file_num_compaction_trigger(4),
level0_slowdown_writes_trigger(8),
level0_stop_writes_trigger(12),
level0_slowdown_writes_trigger(20),
level0_stop_writes_trigger(24),
max_mem_compaction_level(2),
target_file_size_base(2 * 1048576),
target_file_size_multiplier(1),
@ -58,7 +58,7 @@ ColumnFamilyOptions::ColumnFamilyOptions()
expanded_compaction_factor(25),
source_compaction_factor(1),
max_grandparent_overlap_factor(10),
disable_seek_compaction(false),
disable_seek_compaction(true),
soft_rate_limit(0.0),
hard_rate_limit(0.0),
rate_limit_delay_max_milliseconds(1000),
@ -151,11 +151,11 @@ ColumnFamilyOptions::ColumnFamilyOptions(const Options& options)
DBOptions::DBOptions()
: create_if_missing(false),
error_if_exists(false),
paranoid_checks(false),
paranoid_checks(true),
env(Env::Default()),
info_log(nullptr),
info_log_level(INFO),
max_open_files(1000),
max_open_files(5000),
statistics(nullptr),
disableDataSync(false),
use_fsync(false),
@ -176,7 +176,7 @@ DBOptions::DBOptions()
manifest_preallocation_size(4 * 1024 * 1024),
allow_os_buffer(true),
allow_mmap_reads(false),
allow_mmap_writes(true),
allow_mmap_writes(false),
is_fd_close_on_exec(true),
skip_log_error_on_recovery(false),
stats_dump_period_sec(3600),

4
utilities/backupable/backupable_db_test.cc
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@ -846,7 +846,7 @@ TEST(BackupableDBTest, RateLimiting) {
auto rate_limited_backup_time = (bytes_written * kMicrosPerSec) /
backupable_options_->backup_rate_limit;
ASSERT_GT(backup_time, 0.9 * rate_limited_backup_time);
ASSERT_LT(backup_time, 1.3 * rate_limited_backup_time);
ASSERT_LT(backup_time, 1.5 * rate_limited_backup_time);
CloseBackupableDB();
@ -858,7 +858,7 @@ TEST(BackupableDBTest, RateLimiting) {
auto rate_limited_restore_time = (bytes_written * kMicrosPerSec) /
backupable_options_->restore_rate_limit;
ASSERT_GT(restore_time, 0.9 * rate_limited_restore_time);
ASSERT_LT(restore_time, 1.3 * rate_limited_restore_time);
ASSERT_LT(restore_time, 1.5 * rate_limited_restore_time);
AssertBackupConsistency(0, 0, 100000, 100010);
}

427
utilities/geodb/geodb_impl.cc Normal file
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@ -0,0 +1,427 @@
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#include "utilities/geodb/geodb_impl.h"
#define __STDC_FORMAT_MACROS
#include <vector>
#include <map>
#include <string>
#include <limits>
#include "db/filename.h"
#include "util/coding.h"
//
// There are two types of keys. The first type of key-values
// maps a geo location to the set of object ids and their values.
// Table 1
// key : p + : + $quadkey + : + $id +
// : + $latitude + : + $longitude
// value : value of the object
// This table can be used to find all objects that reside near
// a specified geolocation.
//
// Table 2
// key : 'k' + : + $id
// value: $quadkey
namespace rocksdb {
GeoDBImpl::GeoDBImpl(DB* db, const GeoDBOptions& options) :
GeoDB(db, options), db_(db), options_(options) {
}
GeoDBImpl::~GeoDBImpl() {
}
Status GeoDBImpl::Insert(const GeoObject& obj) {
WriteBatch batch;
// It is possible that this id is already associated with
// with a different position. We first have to remove that
// association before we can insert the new one.
// remove existing object, if it exists
GeoObject old;
Status status = GetById(obj.id, &old);
if (status.ok()) {
assert(obj.id.compare(old.id) == 0);
std::string quadkey = PositionToQuad(old.position, Detail);
std::string key1 = MakeKey1(old.position, old.id, quadkey);
std::string key2 = MakeKey2(old.id);
batch.Delete(Slice(key1));
batch.Delete(Slice(key2));
} else if (status.IsNotFound()) {
// What if another thread is trying to insert the same ID concurrently?
} else {
return status;
}
// insert new object
std::string quadkey = PositionToQuad(obj.position, Detail);
std::string key1 = MakeKey1(obj.position, obj.id, quadkey);
std::string key2 = MakeKey2(obj.id);
batch.Put(Slice(key1), Slice(obj.value));
batch.Put(Slice(key2), Slice(quadkey));
return db_->Write(woptions_, &batch);
}
Status GeoDBImpl::GetByPosition(const GeoPosition& pos,
const Slice& id,
std::string* value) {
std::string quadkey = PositionToQuad(pos, Detail);
std::string key1 = MakeKey1(pos, id, quadkey);
return db_->Get(roptions_, Slice(key1), value);
}
Status GeoDBImpl::GetById(const Slice& id, GeoObject* object) {
Status status;
Slice quadkey;
// create an iterator so that we can get a consistent picture
// of the database.
Iterator* iter = db_->NewIterator(roptions_);
// create key for table2
std::string kt = MakeKey2(id);
Slice key2(kt);
iter->Seek(key2);
if (iter->Valid() && iter->status().ok()) {
if (iter->key().compare(key2) == 0) {
quadkey = iter->value();
}
}
if (quadkey.size() == 0) {
delete iter;
return Status::NotFound(key2);
}
//
// Seek to the quadkey + id prefix
//
std::string prefix = MakeKey1Prefix(quadkey.ToString(), id);
iter->Seek(Slice(prefix));
assert(iter->Valid());
if (!iter->Valid() || !iter->status().ok()) {
delete iter;
return Status::NotFound();
}
// split the key into p + quadkey + id + lat + lon
std::vector<std::string> parts;
Slice key = iter->key();
StringSplit(&parts, key.ToString(), ':');
assert(parts.size() == 5);
assert(parts[0] == "p");
assert(parts[1] == quadkey);
assert(parts[2] == id);
// fill up output parameters
object->position.latitude = atof(parts[3].c_str());
object->position.longitude = atof(parts[4].c_str());
object->id = id.ToString(); // this is redundant
object->value = iter->value().ToString();
delete iter;
return Status::OK();
}
Status GeoDBImpl::Remove(const Slice& id) {
// Read the object from the database
GeoObject obj;
Status status = GetById(id, &obj);
if (!status.ok()) {
return status;
}
// remove the object by atomically deleting it from both tables
std::string quadkey = PositionToQuad(obj.position, Detail);
std::string key1 = MakeKey1(obj.position, obj.id, quadkey);
std::string key2 = MakeKey2(obj.id);
WriteBatch batch;
batch.Delete(Slice(key1));
batch.Delete(Slice(key2));
return db_->Write(woptions_, &batch);
}
Status GeoDBImpl::SearchRadial(const GeoPosition& pos,
double radius,
std::vector<GeoObject>* values,
int number_of_values) {
// Gather all bounding quadkeys
std::vector<std::string> qids;
Status s = searchQuadIds(pos, radius, &qids);
if (!s.ok()) {
return s;
}
// create an iterator
Iterator* iter = db_->NewIterator(ReadOptions());
// Process each prospective quadkey
for (std::string qid : qids) {
// The user is interested in only these many objects.
if (number_of_values == 0) {
break;
}
// convert quadkey to db key prefix
std::string dbkey = MakeQuadKeyPrefix(qid);
for (iter->Seek(dbkey);
number_of_values > 0 && iter->Valid() && iter->status().ok();
iter->Next()) {
// split the key into p + quadkey + id + lat + lon
std::vector<std::string> parts;
Slice key = iter->key();
StringSplit(&parts, key.ToString(), ':');
assert(parts.size() == 5);
assert(parts[0] == "p");
std::string* quadkey = &parts[1];
// If the key we are looking for is a prefix of the key
// we found from the database, then this is one of the keys
// we are looking for.
auto res = std::mismatch(qid.begin(), qid.end(), quadkey->begin());
if (res.first == qid.end()) {
GeoPosition pos(atof(parts[3].c_str()), atof(parts[4].c_str()));
GeoObject obj(pos, parts[4], iter->value().ToString());
values->push_back(obj);
number_of_values--;
} else {
break;
}
}
}
delete iter;
return Status::OK();
}
std::string GeoDBImpl::MakeKey1(const GeoPosition& pos, Slice id,
std::string quadkey) {
std::string lat = std::to_string(pos.latitude);
std::string lon = std::to_string(pos.longitude);
std::string key = "p:";
key.reserve(5 + quadkey.size() + id.size() + lat.size() + lon.size());
key.append(quadkey);
key.append(":");
key.append(id.ToString());
key.append(":");
key.append(lat);
key.append(":");
key.append(lon);
return key;
}
std::string GeoDBImpl::MakeKey2(Slice id) {
std::string key = "k:";
key.append(id.ToString());
return key;
}
std::string GeoDBImpl::MakeKey1Prefix(std::string quadkey,
Slice id) {
std::string key = "p:";
key.reserve(3 + quadkey.size() + id.size());
key.append(quadkey);
key.append(":");
key.append(id.ToString());
return key;
}
std::string GeoDBImpl::MakeQuadKeyPrefix(std::string quadkey) {
std::string key = "p:";
key.append(quadkey);
return key;
}
void GeoDBImpl::StringSplit(std::vector<std::string>* tokens,
const std::string &text, char sep) {
std::size_t start = 0, end = 0;
while ((end = text.find(sep, start)) != std::string::npos) {
tokens->push_back(text.substr(start, end - start));
start = end + 1;
}
tokens->push_back(text.substr(start));
}
// convert degrees to radians
double GeoDBImpl::radians(double x) {
return (x * PI) / 180;
}
// convert radians to degrees
double GeoDBImpl::degrees(double x) {
return (x * 180) / PI;
}
// convert a gps location to quad coordinate
std::string GeoDBImpl::PositionToQuad(const GeoPosition& pos,
int levelOfDetail) {
Pixel p = PositionToPixel(pos, levelOfDetail);
Tile tile = PixelToTile(p);
return TileToQuadKey(tile, levelOfDetail);
}
GeoPosition GeoDBImpl::displaceLatLon(double lat, double lon,
double deltay, double deltax) {
double dLat = deltay / EarthRadius;
double dLon = deltax / (EarthRadius * cos(radians(lat)));
return GeoPosition(lat + degrees(dLat),
lon + degrees(dLon));
}
//
// Return the distance between two positions on the earth
//
double GeoDBImpl::distance(double lat1, double lon1,
double lat2, double lon2) {
double lon = radians(lon2 - lon1);
double lat = radians(lat2 - lat1);
double a = (sin(lat / 2) * sin(lat / 2)) +
cos(radians(lat1)) * cos(radians(lat2)) *
(sin(lon / 2) * sin(lon / 2));
double angle = 2 * atan2(sqrt(a), sqrt(1 - a));
return angle * EarthRadius;
}
//
// Returns all the quadkeys inside the search range
//
Status GeoDBImpl::searchQuadIds(const GeoPosition& position,
double radius,
std::vector<std::string>* quadKeys) {
// get the outline of the search square
GeoPosition topLeftPos = boundingTopLeft(position, radius);
GeoPosition bottomRightPos = boundingBottomRight(position, radius);
Pixel topLeft = PositionToPixel(topLeftPos, Detail);
Pixel bottomRight = PositionToPixel(bottomRightPos, Detail);
// how many level of details to look for
int numberOfTilesAtMaxDepth = floor((bottomRight.x - topLeft.x) / 256);
int zoomLevelsToRise = floor(log(numberOfTilesAtMaxDepth) / log(2));
zoomLevelsToRise++;
int levels = std::max(0, Detail - zoomLevelsToRise);
quadKeys->push_back(PositionToQuad(GeoPosition(topLeftPos.latitude,
topLeftPos.longitude),
levels));
quadKeys->push_back(PositionToQuad(GeoPosition(topLeftPos.latitude,
bottomRightPos.longitude),
levels));
quadKeys->push_back(PositionToQuad(GeoPosition(bottomRightPos.latitude,
topLeftPos.longitude),
levels));
quadKeys->push_back(PositionToQuad(GeoPosition(bottomRightPos.latitude,
bottomRightPos.longitude),
levels));
return Status::OK();
}
// Determines the ground resolution (in meters per pixel) at a specified
// latitude and level of detail.
// Latitude (in degrees) at which to measure the ground resolution.
// Level of detail, from 1 (lowest detail) to 23 (highest detail).
// Returns the ground resolution, in meters per pixel.
double GeoDBImpl::GroundResolution(double latitude, int levelOfDetail) {
latitude = clip(latitude, MinLatitude, MaxLatitude);
return cos(latitude * PI / 180) * 2 * PI * EarthRadius /
MapSize(levelOfDetail);
}
// Converts a point from latitude/longitude WGS-84 coordinates (in degrees)
// into pixel XY coordinates at a specified level of detail.
GeoDBImpl::Pixel GeoDBImpl::PositionToPixel(const GeoPosition& pos,
int levelOfDetail) {
double latitude = clip(pos.latitude, MinLatitude, MaxLatitude);
double x = (pos.longitude + 180) / 360;
double sinLatitude = sin(latitude * PI / 180);
double y = 0.5 - log((1 + sinLatitude) / (1 - sinLatitude)) / (4 * PI);
double mapSize = MapSize(levelOfDetail);
double X = floor(clip(x * mapSize + 0.5, 0, mapSize - 1));
double Y = floor(clip(y * mapSize + 0.5, 0, mapSize - 1));
return Pixel((unsigned int)X, (unsigned int)Y);
}
GeoPosition GeoDBImpl::PixelToPosition(const Pixel& pixel, int levelOfDetail) {
double mapSize = MapSize(levelOfDetail);
double x = (clip(pixel.x, 0, mapSize - 1) / mapSize) - 0.5;
double y = 0.5 - (clip(pixel.y, 0, mapSize - 1) / mapSize);
double latitude = 90 - 360 * atan(exp(-y * 2 * PI)) / PI;
double longitude = 360 * x;
return GeoPosition(latitude, longitude);
}
// Converts a Pixel to a Tile
GeoDBImpl::Tile GeoDBImpl::PixelToTile(const Pixel& pixel) {
unsigned int tileX = floor(pixel.x / 256);
unsigned int tileY = floor(pixel.y / 256);
return Tile(tileX, tileY);
}
GeoDBImpl::Pixel GeoDBImpl::TileToPixel(const Tile& tile) {
unsigned int pixelX = tile.x * 256;
unsigned int pixelY = tile.y * 256;
return Pixel(pixelX, pixelY);
}
// Convert a Tile to a quadkey
std::string GeoDBImpl::TileToQuadKey(const Tile& tile, int levelOfDetail) {
std::stringstream quadKey;
for (int i = levelOfDetail; i > 0; i--) {
char digit = '0';
int mask = 1 << (i - 1);
if ((tile.x & mask) != 0) {
digit++;
}
if ((tile.y & mask) != 0) {
digit++;
digit++;
}
quadKey << digit;
}
return quadKey.str();
}
//
// Convert a quadkey to a tile and its level of detail
//
void GeoDBImpl::QuadKeyToTile(std::string quadkey, Tile* tile,
int *levelOfDetail) {
tile->x = tile->y = 0;
*levelOfDetail = quadkey.size();
const char* key = reinterpret_cast<const char *>(quadkey.c_str());
for (int i = *levelOfDetail; i > 0; i--) {
int mask = 1 << (i - 1);
switch (key[*levelOfDetail - i]) {
case '0':
break;
case '1':
tile->x |= mask;
break;
case '2':
tile->y |= mask;
break;
case '3':
tile->x |= mask;
tile->y |= mask;
break;
default:
std::stringstream msg;
msg << quadkey;
msg << " Invalid QuadKey.";
throw std::runtime_error(msg.str());
}
}
}
} // namespace rocksdb

187
utilities/geodb/geodb_impl.h Normal file
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@ -0,0 +1,187 @@
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
#pragma once
#include <algorithm>
#include <cmath>
#include <string>
#include <sstream>
#include <stdexcept>
#include <vector>
#include "utilities/geo_db.h"
#include "utilities/stackable_db.h"
#include "rocksdb/env.h"
#include "rocksdb/status.h"
namespace rocksdb {
// A specific implementation of GeoDB
class GeoDBImpl : public GeoDB {
public:
GeoDBImpl(DB* db, const GeoDBOptions& options);
~GeoDBImpl();
// Associate the GPS location with the identified by 'id'. The value
// is a blob that is associated with this object.
virtual Status Insert(const GeoObject& object);
// Retrieve the value of the object located at the specified GPS
// location and is identified by the 'id'.
virtual Status GetByPosition(const GeoPosition& pos,
const Slice& id,
std::string* value);
// Retrieve the value of the object identified by the 'id'. This method
// could be potentially slower than GetByPosition
virtual Status GetById(const Slice& id, GeoObject* object);
// Delete the specified object
virtual Status Remove(const Slice& id);
// Returns a list of all items within a circular radius from the
// specified gps location
virtual Status SearchRadial(const GeoPosition& pos,
double radius,
std::vector<GeoObject>* values,
int number_of_values);
private:
DB* db_;
const GeoDBOptions options_;
const WriteOptions woptions_;
const ReadOptions roptions_;
// The value of PI
static constexpr double PI = 3.141592653589793;
// convert degrees to radians
static double radians(double x);
// convert radians to degrees
static double degrees(double x);
// A pixel class that captures X and Y coordinates
class Pixel {
public:
unsigned int x;
unsigned int y;
Pixel(unsigned int a, unsigned int b) :
x(a), y(b) {
}
};
// A Tile in the geoid
class Tile {
public:
unsigned int x;
unsigned int y;
Tile(unsigned int a, unsigned int b) :
x(a), y(b) {
}
};
// convert a gps location to quad coordinate
static std::string PositionToQuad(const GeoPosition& pos, int levelOfDetail);
// arbitrary constant use for WGS84 via
// http://en.wikipedia.org/wiki/World_Geodetic_System
// http://mathforum.org/library/drmath/view/51832.html
// http://msdn.microsoft.com/en-us/library/bb259689.aspx
// http://www.tuicool.com/articles/NBrE73
//
const int Detail = 23;
static constexpr double EarthRadius = 6378137;
static constexpr double MinLatitude = -85.05112878;
static constexpr double MaxLatitude = 85.05112878;
static constexpr double MinLongitude = -180;
static constexpr double MaxLongitude = 180;
// clips a number to the specified minimum and maximum values.
static double clip(double n, double minValue, double maxValue) {
return fmin(fmax(n, minValue), maxValue);
}
// Determines the map width and height (in pixels) at a specified level
// of detail, from 1 (lowest detail) to 23 (highest detail).
// Returns the map width and height in pixels.
static unsigned int MapSize(int levelOfDetail) {
return (unsigned int)(256 << levelOfDetail);
}
// Determines the ground resolution (in meters per pixel) at a specified
// latitude and level of detail.
// Latitude (in degrees) at which to measure the ground resolution.
// Level of detail, from 1 (lowest detail) to 23 (highest detail).
// Returns the ground resolution, in meters per pixel.
static double GroundResolution(double latitude, int levelOfDetail);
// Converts a point from latitude/longitude WGS-84 coordinates (in degrees)
// into pixel XY coordinates at a specified level of detail.
static Pixel PositionToPixel(const GeoPosition& pos, int levelOfDetail);
static GeoPosition PixelToPosition(const Pixel& pixel, int levelOfDetail);
// Converts a Pixel to a Tile
static Tile PixelToTile(const Pixel& pixel);
static Pixel TileToPixel(const Tile& tile);
// Convert a Tile to a quadkey
static std::string TileToQuadKey(const Tile& tile, int levelOfDetail);
// Convert a quadkey to a tile and its level of detail
static void QuadKeyToTile(std::string quadkey, Tile* tile,
int *levelOfDetail);
// Return the distance between two positions on the earth
static double distance(double lat1, double lon1,
double lat2, double lon2);
static GeoPosition displaceLatLon(double lat, double lon,
double deltay, double deltax);
//
// Returns the top left position after applying the delta to
// the specified position
//
static GeoPosition boundingTopLeft(const GeoPosition& in, double radius) {
return displaceLatLon(in.latitude, in.longitude, -radius, -radius);
}
//
// Returns the bottom right position after applying the delta to
// the specified position
static GeoPosition boundingBottomRight(const GeoPosition& in,
double radius) {
return displaceLatLon(in.latitude, in.longitude, radius, radius);
}
//
// Get all quadkeys within a radius of a specified position
//
Status searchQuadIds(const GeoPosition& position,
double radius,
std::vector<std::string>* quadKeys);
// splits a string into its components
static void StringSplit(std::vector<std::string>* tokens,
const std::string &text,
char sep);
//
// Create keys for accessing rocksdb table(s)
//
static std::string MakeKey1(const GeoPosition& pos,
Slice id,
std::string quadkey);
static std::string MakeKey2(Slice id);
static std::string MakeKey1Prefix(std::string quadkey,
Slice id);
static std::string MakeQuadKeyPrefix(std::string quadkey);
};
} // namespace rocksdb

123
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@ -0,0 +1,123 @@
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
//
#include "utilities/geodb/geodb_impl.h"
#include <cctype>
#include "util/testharness.h"
namespace rocksdb {
class GeoDBTest {
public:
static const std::string kDefaultDbName;
static Options options;
DB* db;
GeoDB* geodb;
GeoDBTest() {
GeoDBOptions geodb_options;
ASSERT_OK(DestroyDB(kDefaultDbName, options));
options.create_if_missing = true;
Status status = DB::Open(options, kDefaultDbName, &db);
geodb = new GeoDBImpl(db, geodb_options);
}
~GeoDBTest() {
delete geodb;
}
GeoDB* getdb() {
return geodb;
}
};
const std::string GeoDBTest::kDefaultDbName = "/tmp/geodefault/";
Options GeoDBTest::options = Options();
// Insert, Get and Remove
TEST(GeoDBTest, SimpleTest) {
GeoPosition pos1(100, 101);
std::string id1("id1");
std::string value1("value1");
// insert first object into database
GeoObject obj1(pos1, id1, value1);
Status status = getdb()->Insert(obj1);
ASSERT_TRUE(status.ok());
// insert second object into database
GeoPosition pos2(200, 201);
std::string id2("id2");
std::string value2 = "value2";
GeoObject obj2(pos2, id2, value2);
status = getdb()->Insert(obj2);
ASSERT_TRUE(status.ok());
// retrieve first object using position
std::string value;
status = getdb()->GetByPosition(pos1, Slice(id1), &value);
ASSERT_TRUE(status.ok());
ASSERT_EQ(value, value1);
// retrieve first object using id
GeoObject obj;
status = getdb()->GetById(Slice(id1), &obj);
ASSERT_TRUE(status.ok());
ASSERT_EQ(obj.position.latitude, 100);
ASSERT_EQ(obj.position.longitude, 101);
ASSERT_EQ(obj.id.compare(id1), 0);
ASSERT_EQ(obj.value, value1);
// delete first object
status = getdb()->Remove(Slice(id1));
ASSERT_TRUE(status.ok());
status = getdb()->GetByPosition(pos1, Slice(id1), &value);
ASSERT_TRUE(status.IsNotFound());
status = getdb()->GetById(id1, &obj);
ASSERT_TRUE(status.IsNotFound());
// check that we can still find second object
status = getdb()->GetByPosition(pos2, id2, &value);
ASSERT_TRUE(status.ok());
ASSERT_EQ(value, value2);
status = getdb()->GetById(id2, &obj);
ASSERT_TRUE(status.ok());
}
// Search.
// Verify distances via http://www.stevemorse.org/nearest/distance.php
TEST(GeoDBTest, Search) {
GeoPosition pos1(45, 45);
std::string id1("mid1");
std::string value1 = "midvalue1";
// insert object at 45 degree latitude
GeoObject obj1(pos1, id1, value1);
Status status = getdb()->Insert(obj1);
ASSERT_TRUE(status.ok());
// search all objects centered at 46 degree latitude with
// a radius of 200 kilometers. We should find the one object that
// we inserted earlier.
std::vector<GeoObject> values;
status = getdb()->SearchRadial(GeoPosition(46, 46), 200000, &values);
ASSERT_TRUE(status.ok());
ASSERT_EQ(values.size(), 1);
// search all objects centered at 46 degree latitude with
// a radius of 2 kilometers. There should be none.
values.clear();
status = getdb()->SearchRadial(GeoPosition(46, 46), 2, &values);
ASSERT_TRUE(status.ok());
ASSERT_EQ(values.size(), 0);
}
} // namespace rocksdb
int main(int argc, char* argv[]) {
return rocksdb::test::RunAllTests();
}