Fix DBTest.SuggestCompactRangeTest for disable jemalloc case

Summary: DBTest.SuggestCompactRangeTest fails for the case when jemalloc is disabled, including ASAN and valgrind builds. It is caused by the improvement of skip list, which allocates different size of nodes for a new records. Fix it by using a special mem table that triggers a flush by number of entries. In that way the behavior will be consistent for all allocators.

Test Plan: Run the test with both of DISABLE_JEMALLOC=1 and 0

Reviewers: anthony, rven, yhchiang, kradhakrishnan, igor, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: leveldb, dhruba

Differential Revision: https://reviews.facebook.net/D51423
This commit is contained in:
sdong 2015-11-30 11:41:53 -08:00
parent db320b1b82
commit ef8ed3681c
3 changed files with 86 additions and 2 deletions

View File

@ -8626,10 +8626,12 @@ TEST_F(DBTest, SuggestCompactRangeTest) {
};
Options options = CurrentOptions();
options.memtable_factory.reset(
new SpecialSkipListFactory(DBTestBase::kNumKeysByGenerateNewRandomFile));
options.compaction_style = kCompactionStyleLevel;
options.compaction_filter_factory.reset(
new CompactionFilterFactoryGetContext());
options.write_buffer_size = 100 << 10;
options.write_buffer_size = 200 << 10;
options.arena_block_size = 4 << 10;
options.level0_file_num_compaction_trigger = 4;
options.num_levels = 4;

View File

@ -855,8 +855,10 @@ void DBTestBase::GenerateNewFile(Random* rnd, int* key_idx, bool nowait) {
}
}
const int DBTestBase::kNumKeysByGenerateNewRandomFile = 51;
void DBTestBase::GenerateNewRandomFile(Random* rnd, bool nowait) {
for (int i = 0; i < 51; i++) {
for (int i = 0; i < kNumKeysByGenerateNewRandomFile; i++) {
ASSERT_OK(Put("key" + RandomString(rnd, 7), RandomString(rnd, 2000)));
}
ASSERT_OK(Put("key" + RandomString(rnd, 7), RandomString(rnd, 200)));

View File

@ -118,6 +118,84 @@ struct OptionsOverride {
} // namespace anon
// A hacky skip list mem table that triggers flush after number of entries.
class SpecialMemTableRep : public MemTableRep {
public:
explicit SpecialMemTableRep(MemTableAllocator* allocator,
MemTableRep* memtable, int num_entries_flush)
: MemTableRep(allocator),
memtable_(memtable),
num_entries_flush_(num_entries_flush),
num_entries_(0) {}
virtual KeyHandle Allocate(const size_t len, char** buf) override {
return memtable_->Allocate(len, buf);
}
// Insert key into the list.
// REQUIRES: nothing that compares equal to key is currently in the list.
virtual void Insert(KeyHandle handle) override {
memtable_->Insert(handle);
num_entries_++;
}
// Returns true iff an entry that compares equal to key is in the list.
virtual bool Contains(const char* key) const override {
return memtable_->Contains(key);
}
virtual size_t ApproximateMemoryUsage() override {
// Return a high memory usage when number of entries exceeds the threshold
// to trigger a flush.
return (num_entries_ < num_entries_flush_) ? 0 : 1024 * 1024 * 1024;
}
virtual void Get(const LookupKey& k, void* callback_args,
bool (*callback_func)(void* arg,
const char* entry)) override {
memtable_->Get(k, callback_args, callback_func);
}
uint64_t ApproximateNumEntries(const Slice& start_ikey,
const Slice& end_ikey) override {
return memtable_->ApproximateNumEntries(start_ikey, end_ikey);
}
virtual MemTableRep::Iterator* GetIterator(Arena* arena = nullptr) override {
return memtable_->GetIterator(arena);
}
virtual ~SpecialMemTableRep() override {}
private:
unique_ptr<MemTableRep> memtable_;
int num_entries_flush_;
int num_entries_;
};
// The factory for the hacky skip list mem table that triggers flush after
// number of entries exceeds a threshold.
class SpecialSkipListFactory : public MemTableRepFactory {
public:
// After number of inserts exceeds `num_entries_flush` in a mem table, trigger
// flush.
explicit SpecialSkipListFactory(int num_entries_flush)
: num_entries_flush_(num_entries_flush) {}
virtual MemTableRep* CreateMemTableRep(
const MemTableRep::KeyComparator& compare, MemTableAllocator* allocator,
const SliceTransform* transform, Logger* logger) {
return new SpecialMemTableRep(
allocator, factory_.CreateMemTableRep(compare, allocator, transform, 0),
num_entries_flush_);
}
virtual const char* Name() const override { return "SkipListFactory"; }
private:
SkipListFactory factory_;
int num_entries_flush_;
};
// Special Env used to delay background operations
class SpecialEnv : public EnvWrapper {
public:
@ -631,6 +709,8 @@ class DBTestBase : public testing::Test {
void GenerateNewFile(int fd, Random* rnd, int* key_idx, bool nowait = false);
static const int kNumKeysByGenerateNewRandomFile;
void GenerateNewRandomFile(Random* rnd, bool nowait = false);
std::string IterStatus(Iterator* iter);