Commit Graph

10843 Commits

Author SHA1 Message Date
duyuqi
cbe303c19b fix a bug, c api, if enable inplace_update_support, and use create sn… (#9471)
Summary:
c api release snapshot will core dump when enable inplace_update_support and create snapshot

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9471

Reviewed By: akankshamahajan15

Differential Revision: D34965103

Pulled By: riversand963

fbshipit-source-id: c3aeeb9ea7126c2eda1466102794fecf57b6ab77
2022-03-21 12:04:33 -07:00
Jay Zhuang
661e03294c Enable detect_stack_use_after_return for ASAN (#9714)
Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/9714

Reviewed By: ajkr

Differential Revision: D34983675

Pulled By: jay-zhuang

fbshipit-source-id: 0252ec6ee38a0b960df4c92791c7c2bcbfba5ad8
2022-03-21 10:34:11 -07:00
Akanksha Mahajan
49a10feb21 Provide implementation to prefetch data asynchronously in FilePrefetchBuffer (#9674)
Summary:
In FilePrefetchBuffer if reads are sequential, after prefetching call ReadAsync API to prefetch data asynchronously so that in next prefetching data will be available. Data prefetched asynchronously will be readahead_size/2. It uses two buffers, one for synchronous prefetching and one for asynchronous. In case, the data is overlapping, the data is copied from both buffers to third buffer to make it continuous.
This feature is under ReadOptions::async_io and is under experimental.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9674

Test Plan:
1. Add new unit tests
2. Run **db_stress** to make sure nothing crashes.

    -   Normal prefetch without `async_io` ran successfully:
```
export CRASH_TEST_EXT_ARGS=" --async_io=0"
 make crash_test -j
 ```

3. **Run Regressions**.
   i) Main branch without any change for normal prefetching with async_io disabled:

 ```
 ./db_bench -db=/tmp/prefix_scan_prefetch_main -benchmarks="fillseq" -key_size=32 -value_size=512 -num=5000000 -
           use_direct_io_for_flush_and_compaction=true -target_file_size_base=16777216
 ```

```
./db_bench -use_existing_db=true -db=/tmp/prefix_scan_prefetch_main -benchmarks="seekrandom" -key_size=32 -value_size=512 -num=5000000 -use_direct_reads=true -seek_nexts=327680 -duration=120 -ops_between_duration_checks=1
Initializing RocksDB Options from the specified file
Initializing RocksDB Options from command-line flags
RocksDB:    version 7.0
Date:       Thu Mar 17 13:11:34 2022
CPU:        24 * Intel Core Processor (Broadwell)
CPUCache:   16384 KB
Keys:       32 bytes each (+ 0 bytes user-defined timestamp)
Values:     512 bytes each (256 bytes after compression)
Entries:    5000000
Prefix:    0 bytes
Keys per prefix:    0
RawSize:    2594.0 MB (estimated)
FileSize:   1373.3 MB (estimated)
Write rate: 0 bytes/second
Read rate: 0 ops/second
Compression: Snappy
Compression sampling rate: 0
Memtablerep: SkipListFactory
Perf Level: 1
------------------------------------------------
DB path: [/tmp/prefix_scan_prefetch_main]
seekrandom   :  483618.390 micros/op 2 ops/sec;  338.9 MB/s (249 of 249 found)
```

  ii) normal prefetching after changes with async_io disable:

```
./db_bench -use_existing_db=true -db=/tmp/prefix_scan_prefetch_withchange -benchmarks="seekrandom" -key_size=32 -value_size=512 -num=5000000 -use_direct_reads=true -seek_nexts=327680 -duration=120 -ops_between_duration_checks=1
Initializing RocksDB Options from the specified file
Initializing RocksDB Options from command-line flags
RocksDB:    version 7.0
Date:       Thu Mar 17 14:11:31 2022
CPU:        24 * Intel Core Processor (Broadwell)
CPUCache:   16384 KB
Keys:       32 bytes each (+ 0 bytes user-defined timestamp)
Values:     512 bytes each (256 bytes after compression)
Entries:    5000000
Prefix:    0 bytes
Keys per prefix:    0
RawSize:    2594.0 MB (estimated)
FileSize:   1373.3 MB (estimated)
Write rate: 0 bytes/second
Read rate: 0 ops/second
Compression: Snappy
Compression sampling rate: 0
Memtablerep: SkipListFactory
Perf Level: 1
------------------------------------------------
DB path: [/tmp/prefix_scan_prefetch_withchange]
seekrandom   :  471347.227 micros/op 2 ops/sec;  348.1 MB/s (255 of 255 found)
```

Reviewed By: anand1976

Differential Revision: D34731543

Pulled By: akankshamahajan15

fbshipit-source-id: 8e23aa93453d5fe3c672b9231ad582f60207937f
2022-03-21 07:12:43 -07:00
Peter Dillinger
a8a422e962 Add manifest fix-up utility for file temperatures (#9683)
Summary:
The goal of this change is to allow changes to the "current" (in
FileSystem) file temperatures to feed back into DB metadata, so that
they can inform decisions and stats reporting. In part because of
modular code factoring, it doesn't seem easy to do this automagically,
where opening an SST file and observing current Temperature different
from expected would trigger a change in metadata and DB manifest write
(essentially giving the deep read path access to the write path). It is also
difficult to do this while the DB is open because of the limitations of
LogAndApply.

This change allows updating file temperature metadata on a closed DB
using an experimental utility function UpdateManifestForFilesState()
or `ldb update_manifest --update_temperatures`. This should suffice for
"migration" scenarios where outside tooling has placed or re-arranged DB
files into a (different) tiered configuration without going through
RocksDB itself (currently, only compaction can change temperature
metadata).

Some details:
* Refactored and added unit test for `ldb unsafe_remove_sst_file` because
of shared functionality
* Pulled in autovector.h changes from https://github.com/facebook/rocksdb/issues/9546 to fix SuperVersionContext
move constructor (related to an older draft of this change)

Possible follow-up work:
* Support updating manifest with file checksums, such as when a
new checksum function is used and want existing DB metadata updated
for it.
* It's possible that for some repair scenarios, lighter weight than
full repair, we might want to support UpdateManifestForFilesState() to
modify critical file details like size or checksum using same
algorithm. But let's make sure these are differentiated from modifying
file details in ways that don't suspect corruption (or require extreme
trust).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9683

Test Plan: unit tests added

Reviewed By: jay-zhuang

Differential Revision: D34798828

Pulled By: pdillinger

fbshipit-source-id: cfd83e8fb10761d8c9e7f9c020d68c9106a95554
2022-03-18 16:35:51 -07:00
Yanqin Jin
b2aacaf923 Fix assertion error by doing comparison with mutex (#9717)
Summary:
On CircleCI MacOS instances, we have been seeing the following assertion error:
```
Assertion failed: (alive_log_files_tail_ == alive_log_files_.rbegin()), function WriteToWAL, file /Users/distiller/project/db/db_impl/db_impl_write.cc, line 1213.
Received signal 6 (Abort trap: 6)
#0   0x1
https://github.com/facebook/rocksdb/issues/1   abort (in libsystem_c.dylib) + 120
https://github.com/facebook/rocksdb/issues/2   err (in libsystem_c.dylib) + 0
https://github.com/facebook/rocksdb/issues/3   rocksdb::DBImpl::WriteToWAL(rocksdb::WriteBatch const&, rocksdb::log::Writer*, unsigned long long*, unsigned long long*, rocksdb::Env::IOPriority, bool, bool) (in librocksdb.7.0.0.dylib) (db_impl_write.cc:1213)
https://github.com/facebook/rocksdb/issues/4   rocksdb::DBImpl::WriteToWAL(rocksdb::WriteThread::WriteGroup const&, rocksdb::log::Writer*, unsigned long long*, bool, bool, unsigned long long) (in librocksdb.7.0.0.dylib) (db_impl_write.cc:1251)
https://github.com/facebook/rocksdb/issues/5   rocksdb::DBImpl::WriteImpl(rocksdb::WriteOptions const&, rocksdb::WriteBatch*, rocksdb::WriteCallback*, unsigned long long*, unsigned long long, bool, unsigned long long*, unsigned long, rocksdb::PreReleaseCallback*) (in librocksdb.7.0.0.dylib) (db_impl_	rite.cc:421)
https://github.com/facebook/rocksdb/issues/6   rocksdb::DBImpl::Write(rocksdb::WriteOptions const&, rocksdb::WriteBatch*) (in librocksdb.7.0.0.dylib) (db_impl_write.cc:109)
https://github.com/facebook/rocksdb/issues/7   rocksdb::DB::Put(rocksdb::WriteOptions const&, rocksdb::ColumnFamilyHandle*, rocksdb::Slice const&, rocksdb::Slice const&, rocksdb::Slice const&) (in librocksdb.7.0.0.dylib) (db_impl_write.cc:2159)
https://github.com/facebook/rocksdb/issues/8   rocksdb::DBImpl::Put(rocksdb::WriteOptions const&, rocksdb::ColumnFamilyHandle*, rocksdb::Slice const&, rocksdb::Slice const&, rocksdb::Slice const&) (in librocksdb.7.0.0.dylib) (db_impl_write.cc:37)
https://github.com/facebook/rocksdb/issues/9   rocksdb::DB::Put(rocksdb::WriteOptions const&, rocksdb::Slice const&, rocksdb::Slice const&, rocksdb::Slice const&) (in librocksdb.7.0.0.dylib) (db.h:382)
https://github.com/facebook/rocksdb/issues/10  rocksdb::DBBasicTestWithTimestampPrefixSeek_IterateWithPrefix_Test::TestBody() (in db_with_timestamp_basic_test) (db_with_timestamp_basic_test.cc:2926)
https://github.com/facebook/rocksdb/issues/11  void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) (in db_with_timestamp_basic_test) (gtest-all.cc:3899)
https://github.com/facebook/rocksdb/issues/12  void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) (in db_with_timestamp_basic_test) (gtest-all.cc:3935)
https://github.com/facebook/rocksdb/issues/13  testing::Test::Run() (in db_with_timestamp_basic_test) (gtest-all.cc:3980)
https://github.com/facebook/rocksdb/issues/14  testing::TestInfo::Run() (in db_with_timestamp_basic_test) (gtest-all.cc:4153)
https://github.com/facebook/rocksdb/issues/15  testing::TestCase::Run() (in db_with_timestamp_basic_test) (gtest-all.cc:4266)
https://github.com/facebook/rocksdb/issues/16  testing::internal::UnitTestImpl::RunAllTests() (in db_with_timestamp_basic_test) (gtest-all.cc:6632)
https://github.com/facebook/rocksdb/issues/17  bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (in db_with_timestamp_basic_test) (gtest-all.cc:3899)
https://github.com/facebook/rocksdb/issues/18  bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (in db_with_timestamp_basic_test) (gtest-all.cc:3935)
https://github.com/facebook/rocksdb/issues/19  testing::UnitTest::Run() (in db_with_timestamp_basic_test) (gtest-all.cc:6242)
https://github.com/facebook/rocksdb/issues/20  RUN_ALL_TESTS() (in db_with_timestamp_basic_test) (gtest.h:22110)
https://github.com/facebook/rocksdb/issues/21  main (in db_with_timestamp_basic_test) (db_with_timestamp_basic_test.cc:3150)
https://github.com/facebook/rocksdb/issues/22  start (in libdyld.dylib) + 1
```

It's likely caused by concurrent, unprotected access to the deque, even though `back()` is never popped,
and we are comparing `rbegin()` with a cached `riterator`. To be safe, do the comparison only if we have mutex.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9717

Test Plan:
One example
Ssh to one CircleCI MacOS instance.
```
gtest-parallel -r 1000 -w 8 ./db_test --gtest_filter=DBTest.FlushesInParallelWithCompactRange
```

Reviewed By: pdillinger

Differential Revision: D34990696

Pulled By: riversand963

fbshipit-source-id: 62dd48ae6fedbda53d0a64d73de9b948b4c26eee
2022-03-18 13:11:57 -07:00
Peter Dillinger
cff0d1e8e6 New backup meta schema, with file temperatures (#9660)
Summary:
The primary goal of this change is to add support for backing up and
restoring (applying on restore) file temperature metadata, without
committing to either the DB manifest or the FS reported "current"
temperatures being exclusive "source of truth".

To achieve this goal, we need to add temperature information to backup
metadata, which requires updated backup meta schema. Fortunately I
prepared for this in https://github.com/facebook/rocksdb/issues/8069, which began forward compatibility in version
6.19.0 for this kind of schema update. (Previously, backup meta schema
was not extensible! Making this schema update public will allow some
other "nice to have" features like taking backups with hard links, and
avoiding crc32c checksum computation when another checksum is already
available.) While schema version 2 is newly public, the default schema
version is still 1. Until we change the default, users will need to set
to 2 to enable features like temperature data backup+restore. New
metadata like temperature information will be ignored with a warning
in versions before this change and since 6.19.0. The metadata is
considered ignorable because a functioning DB can be restored without
it.

Some detail:
* Some renaming because "future schema" is now just public schema 2.
* Initialize some atomics in TestFs (linter reported)
* Add temperature hint support to SstFileDumper (used by BackupEngine)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9660

Test Plan:
related unit test majorly updated for the new functionality,
including some shared testing support for tracking temperatures in a FS.

Some other tests and testing hooks into production code also updated for
making the backup meta schema change public.

Reviewed By: ajkr

Differential Revision: D34686968

Pulled By: pdillinger

fbshipit-source-id: 3ac1fa3e67ee97ca8a5103d79cc87d872c1d862a
2022-03-18 11:06:17 -07:00
Yanqin Jin
3bdbf67e1a Fix race condition caused by concurrent accesses to forceMmapOff_ when opening Posix WritableFile (#9685)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9685

Our TSAN reports a race condition as follows when running test
```
gtest-parallel -r 100 ./external_sst_file_test --gtest_filter=ExternalSSTFileTest.MultiThreaded
```
leads to the following

```
WARNING: ThreadSanitizer: data race (pid=2683148)
  Write of size 1 at 0x556fede63340 by thread T7:
    #0 rocksdb::(anonymous namespace)::PosixFileSystem::OpenWritableFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, rocksdb::FileOptions const&, bool, std::unique_ptr<rocksdb::FSWritableFile, std::default_delete<rocksdb::FSWritableFile> >*, rocksdb::IODebugContext*) internal_repo_rocksdb/repo/env/fs_posix.cc:334 (external_sst_file_test+0xb61ac4)
    #1 rocksdb::(anonymous namespace)::PosixFileSystem::ReopenWritableFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, rocksdb::FileOptions const&, std::unique_ptr<rocksdb::FSWritableFile, std::default_delete<rocksdb::FSWritableFile> >*, rocksdb::IODebugContext*) internal_repo_rocksdb/repo/env/fs_posix.cc:382 (external_sst_file_test+0xb5ba96)
    #2 rocksdb::CompositeEnv::ReopenWritableFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::unique_ptr<rocksdb::WritableFile, std::default_delete<rocksdb::WritableFile> >*, rocksdb::EnvOptions const&) internal_repo_rocksdb/repo/env/composite_env.cc:334 (external_sst_file_test+0xa6ab7f)
    #3 rocksdb::EnvWrapper::ReopenWritableFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::unique_ptr<rocksdb::WritableFile, std::default_delete<rocksdb::WritableFile> >*, rocksdb::EnvOptions const&) internal_repo_rocksdb/repo/include/rocksdb/env.h:1428 (external_sst_file_test+0x561f3e)
Previous read of size 1 at 0x556fede63340 by thread T4:
    #0 rocksdb::(anonymous namespace)::PosixFileSystem::OpenWritableFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, rocksdb::FileOptions const&, bool, std::unique_ptr<rocksdb::FSWritableFile, std::default_delete<rocksdb::FSWritableFile> >*, rocksdb::IODebugContext*) internal_repo_rocksdb/repo/env/fs_posix.cc:328 (external_sst_file_test+0xb61a70)
    #1 rocksdb::(anonymous namespace)::PosixFileSystem::ReopenWritableFile(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator
...
```

Fix by making sure the following block gets executed only once:
```
      if (!checkedDiskForMmap_) {
        // this will be executed once in the program's lifetime.
        // do not use mmapWrite on non ext-3/xfs/tmpfs systems.
        if (!SupportsFastAllocate(fname)) {
          forceMmapOff_ = true;
        }
        checkedDiskForMmap_ = true;
      }
```

Reviewed By: pdillinger

Differential Revision: D34780308

fbshipit-source-id: b761f66b24c8b5b8389d86ea371c8542b8d869d5
2022-03-17 19:50:30 -07:00
Jay Zhuang
f0fca81fc6 Deflake DeleteSchedulerTest.StartBGEmptyTrashMultipleTimes (#9706)
Summary:
The designed sync point may not be hit if trash file is generated faster
than deleting. Then the file will be deleted directly instead of waiting
for background trash empty thread to do it.
Increase SstFileManager Trash/DB ratio to avoid that.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9706

Test Plan:
`gtest-parallel ./delete_scheduler_test
--gtest_filter=DeleteSchedulerTest.StartBGEmptyTrashMultipleTimes -r
10000 -w 100`
It was likely to happen on one of the host.

Reviewed By: riversand963

Differential Revision: D34964735

Pulled By: jay-zhuang

fbshipit-source-id: bb78015489b5f6b3f11783aae7e5853ea197702c
2022-03-17 13:30:28 -07:00
Jay Zhuang
2586585b0c Minor fix for Windows build with zlib (#9699)
Summary:
```
conversion from 'size_t' to 'uLong', possible loss of data
```

Fix https://github.com/facebook/rocksdb/issues/9688

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9699

Reviewed By: riversand963

Differential Revision: D34901116

Pulled By: jay-zhuang

fbshipit-source-id: 969148a7a8c023449bd85055a1f0eec71d0a9b3f
2022-03-16 21:16:12 -07:00
Yanqin Jin
5894761056 Improve stress test for transactions (#9568)
Summary:
Test only, no change to functionality.
Extremely low risk of library regression.

Update test key generation by maintaining existing and non-existing keys.
Update db_crashtest.py to drive multiops_txn stress test for both write-committed and write-prepared.
Add a make target 'blackbox_crash_test_with_multiops_txn'.

Running the following commands caught the bug exposed in https://github.com/facebook/rocksdb/issues/9571.
```
$rm -rf /tmp/rocksdbtest/*
$./db_stress -progress_reports=0 -test_multi_ops_txns -use_txn -clear_column_family_one_in=0 \
    -column_families=1 -writepercent=0 -delpercent=0 -delrangepercent=0 -customopspercent=60 \
   -readpercent=20 -prefixpercent=0 -iterpercent=20 -reopen=0 -ops_per_thread=1000 -ub_a=10000 \
   -ub_c=100 -destroy_db_initially=0 -key_spaces_path=/dev/shm/key_spaces_desc -threads=32 -read_fault_one_in=0
$./db_stress -progress_reports=0 -test_multi_ops_txns -use_txn -clear_column_family_one_in=0
   -column_families=1 -writepercent=0 -delpercent=0 -delrangepercent=0 -customopspercent=60 -readpercent=20 \
   -prefixpercent=0 -iterpercent=20 -reopen=0 -ops_per_thread=1000 -ub_a=10000 -ub_c=100 -destroy_db_initially=0 \
   -key_spaces_path=/dev/shm/key_spaces_desc -threads=32 -read_fault_one_in=0
```

Running the following command caught a bug which will be fixed in https://github.com/facebook/rocksdb/issues/9648 .
```
$TEST_TMPDIR=/dev/shm make blackbox_crash_test_with_multiops_wc_txn
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9568

Reviewed By: jay-zhuang

Differential Revision: D34308154

Pulled By: riversand963

fbshipit-source-id: 99ff1b65c19b46c471d2f2d3b47adcd342a1b9e7
2022-03-16 19:00:04 -07:00
Peter Dillinger
fe9a344c55 crash_test Makefile refactoring, add to CircleCI (#9702)
Summary:
some Makefile refactoring to support Meta-internal workflows,
and add a basic crash_test flow to CircleCI

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9702

Test Plan: CI

Reviewed By: riversand963

Differential Revision: D34934315

Pulled By: pdillinger

fbshipit-source-id: 67f17280096d8968d8e44459293f72fb6fe339f3
2022-03-16 15:58:06 -07:00
anand76
a88d8795ec Expand auto recovery to background read errors (#9679)
Summary:
Fix and enhance the background error recovery logic to handle the
following situations -
1. Background read errors during flush/compaction (previously was
resulting in unrecoverable state)
2. Fix auto recovery failure on read/write errors during atomic flush.
It was failing due to a bug in setting the resuming_from_bg_err variable
in AtomicFlushMemTablesToOutputFiles.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9679

Test Plan: Add new unit tests in error_handler_fs_test

Reviewed By: riversand963

Differential Revision: D34770097

Pulled By: anand1976

fbshipit-source-id: 136da973a28d684b9c74bdf668519b0cbbbe1742
2022-03-15 14:45:34 -07:00
Jay Zhuang
2c8100e60e Fix a race condition when disable and enable manual compaction (#9694)
Summary:
In https://github.com/facebook/rocksdb/issues/9659, when `DisableManualCompaction()` is issued, the foreground
manual compaction thread does not have to wait background compaction
thread to finish. Which could be a problem that the user re-enable
manual compaction with `EnableManualCompaction()`, it may re-enable the
BG compaction which supposed be cancelled.
This patch makes the FG compaction wait on
`manual_compaction_state.done`, which either be set by BG compaction or
Unschedule callback. Then when FG manual compaction thread returns, it
should not have BG compaction running. So shared_ptr is no longer needed
for `manual_compaction_state`.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9694

Test Plan: a StressTest and unittest

Reviewed By: ajkr

Differential Revision: D34885472

Pulled By: jay-zhuang

fbshipit-source-id: e6476175b43e8c59cd49f5c09241036a0716c274
2022-03-15 12:31:14 -07:00
Yanqin Jin
6a76008369 Fix TSAN caused by calling rend() and pop_front(). (#9698)
Summary:
PR9686 makes `WriteToWAL()` call `assert(...!=rend())` while not holding
db mutex or log mutex. Another thread may concurrently call
`pop_front()`, causing race condition.
To fix, assert only if mutex is held.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9698

Test Plan: COMPILE_WITH_TSAN=1 make check

Reviewed By: jay-zhuang

Differential Revision: D34898535

Pulled By: riversand963

fbshipit-source-id: 1ddfa5bf1b6ae8d409cab6ff6e1b5321c6803da9
2022-03-15 12:16:40 -07:00
ehds@qq.com
60422f1676 Replace GetUserKey with ExtractUserKey (#9664)
Summary:
Replace `GetUserKey` with `ExtractUserKey`

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9664

Reviewed By: jay-zhuang

Differential Revision: D34673571

Pulled By: ajkr

fbshipit-source-id: 5acf7d0d1a45efce0ccbe505991acf76c9cdc461
2022-03-15 10:02:33 -07:00
gukaifeng
89429a9081 fix a bug of the ticker NO_FILE_OPENS (#9677)
Summary:
In the original code, the value of `NO_FILE_OPENS` corresponding to the Ticker item will be increased regardless of whether the file is successfully opened or not. Even counts are repeated, which can lead to skewed counts.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9677

Reviewed By: jay-zhuang

Differential Revision: D34725733

Pulled By: ajkr

fbshipit-source-id: 841234ed03802c0105fd2107d82a740265ead576
2022-03-15 09:55:49 -07:00
Jermy Li
3da8236837 fix: Reusing-Iterator reads stale keys after DeleteRange() performed (#9258)
Summary:
fix https://github.com/facebook/rocksdb/issues/9255

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9258

Reviewed By: pdillinger

Differential Revision: D34879684

Pulled By: ajkr

fbshipit-source-id: 5934f4b7524dc27ecdf1430e0456a0fc02958fc7
2022-03-15 09:50:21 -07:00
Yanqin Jin
bbdaf63d0f Fix a TSAN-reported bug caused by concurrent accesss to std::deque (#9686)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9686

According to https://www.cplusplus.com/reference/deque/deque/back/,
"
The container is accessed (neither the const nor the non-const versions modify the container).
The last element is potentially accessed or modified by the caller. Concurrently accessing or modifying other elements is safe.
"

Also according to https://www.cplusplus.com/reference/deque/deque/pop_front/,
"
The container is modified.
The first element is modified. Concurrently accessing or modifying other elements is safe (although see iterator validity above).
"
In RocksDB, we never pop the last element of `DBImpl::alive_log_files_`. We have been
exploiting this fact and the above two properties when ensuring correctness when
`DBImpl::alive_log_files_` may be accessed concurrently. Specifically, it can be accessed
in the write path when db mutex is released. Sometimes, the log_mute_ is held. It can also be accessed in `FindObsoleteFiles()`
when db mutex is always held. It can also be accessed
during recovery when db mutex is also held.
Given the fact that we never pop the last element of alive_log_files_, we currently do not
acquire additional locks when accessing it in `WriteToWAL()` as follows
```
alive_log_files_.back().AddSize(log_entry.size());
```

This is problematic.

Check source code of deque.h
```
  back() _GLIBCXX_NOEXCEPT
  {
__glibcxx_requires_nonempty();
...
  }

  pop_front() _GLIBCXX_NOEXCEPT
  {
...
  if (this->_M_impl._M_start._M_cur
      != this->_M_impl._M_start._M_last - 1)
    {
      ...
      ++this->_M_impl._M_start._M_cur;
    }
  ...
  }
```

`back()` will actually call `__glibcxx_requires_nonempty()` first.
If `__glibcxx_requires_nonempty()` is enabled and not an empty macro,
it will call `empty()`
```
bool empty() {
return this->_M_impl._M_finish == this->_M_impl._M_start;
}
```
You can see that it will access `this->_M_impl._M_start`, racing with `pop_front()`.
Therefore, TSAN will actually catch the bug in this case.

To be able to use TSAN on our library and unit tests, we should always coordinate
concurrent accesses to STL containers properly.

We need to pass information about db mutex and log mutex into `WriteToWAL()`, otherwise
it's impossible to know which mutex to acquire inside the function.

To fix this, we can catch the tail of `alive_log_files_` by reference, so that we do not have to call `back()` in `WriteToWAL()`.

Reviewed By: pdillinger

Differential Revision: D34780309

fbshipit-source-id: 1def9821f0c437f2736c6a26445d75890377889b
2022-03-14 18:49:55 -07:00
Tomas Kolda
9e05c5e251 NPE in Java_org_rocksdb_ColumnFamilyOptions_setSstPartitionerFactory (#9622)
Summary:
There was a mistake that incorrectly cast SstPartitionerFactory (missed shared pointer). It worked for database (correct cast), but not for family. Trying to set it in family has caused Access violation.

I have also added test and improved it. Older version was passing even without sst partitioner which is weird, because on Level1 we had two SST files with same key "aaaa1". I was not sure if it is a new feature and changed it to overlaping keys "aaaa0" - "aaaa2" overlaps "aaaa1".

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9622

Reviewed By: ajkr

Differential Revision: D34871968

Pulled By: pdillinger

fbshipit-source-id: a08009766da49fc198692a610e8beb19caf737e6
2022-03-14 14:12:30 -07:00
Yuriy Chernyshov
a6a179859e #include <winioctl.h> as MSDN prescribes (#9612)
Summary:
The recommendation can be found e. g. [here](https://docs.microsoft.com/en-us/windows/win32/api/winioctl/ns-winioctl-storage_property_query).

While `<windows.h>` transitively includes `<winioctl.h>` by default, this can be switched off by `/DWIN32_LEAN_AND_MEAN` which forces the user to include-what-you-use.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9612

Reviewed By: riversand963

Differential Revision: D34845629

Pulled By: ajkr

fbshipit-source-id: 1ef9273074e3d84864c6833a7de6eb9df81e29d9
2022-03-13 17:01:21 -07:00
Jay Zhuang
efd767d14a Fix build for io_uring (#9690)
Summary:
Minor fix for build failure:
```
./env/io_posix.h:68:33: error: unused parameter 'len' [-Werror=unused-parameter]
   68 |                          size_t len, size_t iov_len, bool async_read,
      |                          ~~~~~~~^~~
```
Only happens for release build with io_uring.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9690

Test Plan: build pass with io_uring

Reviewed By: akankshamahajan15

Differential Revision: D34846347

Pulled By: jay-zhuang

fbshipit-source-id: 2d7afb585097262d7722ef1beac486fc8ef28419
2022-03-12 22:12:18 -08:00
Jay Zhuang
4dff279b19 DisableManualCompaction may fail to cancel an unscheduled task (#9659)
Summary:
https://github.com/facebook/rocksdb/issues/9625 didn't change the unschedule condition which was waiting for the background thread to clean-up the compaction.
make sure we only unschedule the task when it's scheduled.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9659

Reviewed By: ajkr

Differential Revision: D34651820

Pulled By: jay-zhuang

fbshipit-source-id: 23f42081b15ec8886cd81cbf131b116e0c74dc2f
2022-03-12 20:07:04 -08:00
Jay Zhuang
09b0e8f2c7 Fix a timer crash caused by invalid memory management (#9656)
Summary:
Timer crash when multiple DB instances doing heavy DB open and close
operations concurrently. Which is caused by adding a timer task with
smaller timestamp than the current running task. Fix it by moving the
getting new task timestamp part within timer mutex protection.
And other fixes:
- Disallow adding duplicated function name to timer
- Fix a minor memory leak in timer when a running task is cancelled

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9656

Reviewed By: ajkr

Differential Revision: D34626296

Pulled By: jay-zhuang

fbshipit-source-id: 6b6d96a5149746bf503546244912a9e41a0c5f6b
2022-03-12 11:45:56 -08:00
Jay Zhuang
91372328ef Reduce Windows build parallelism number (#9687)
Summary:
To avoid OOM issue for VS2007 build.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9687

Test Plan: Run VS2007 build 5 times, seems fine.

Reviewed By: ajkr

Differential Revision: D34845073

Pulled By: jay-zhuang

fbshipit-source-id: 60f84885e391e878ee6f3b1945376323baf47ec5
2022-03-12 11:45:10 -08:00
slk
95305c44a1 Add OpenAndTrimHistory API to support trimming data with specified timestamp (#9410)
Summary:
As disscussed in (https://github.com/facebook/rocksdb/issues/9223), Here added a new API  named DB::OpenAndTrimHistory, this API will open DB and trim data to the timestamp specofied by **trim_ts** (The data with newer timestamp than specified trim bound will be removed). This API should only be used at a timestamp-enabled db instance recovery.

And this PR implemented a new iterator named HistoryTrimmingIterator to support trimming history with a new API named DB::OpenAndTrimHistory. HistoryTrimmingIterator wrapped around the underlying InternalITerator such that keys whose timestamps newer than **trim_ts** should not be returned to the compaction iterator while **trim_ts** is not null.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9410

Reviewed By: ltamasi

Differential Revision: D34410207

Pulled By: riversand963

fbshipit-source-id: e54049dc234eccd673244c566b15df58df5a6236
2022-03-11 16:13:23 -08:00
Baptiste Lemaire
e4c87773e1 Reactivate Mempurge feature in crash test. (#9684)
Summary:
Set `experimental_mempurge_threshold` back to `lambda: 10.0*random.random()` in crash test, reverting https://github.com/facebook/rocksdb/issues/8958 after fix provided in https://github.com/facebook/rocksdb/issues/9671 .

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9684

Reviewed By: pdillinger

Differential Revision: D34820257

Pulled By: bjlemaire

fbshipit-source-id: 1e5ae8c872c4ac4c4267c990ac5e3e793d77908c
2022-03-11 15:47:30 -08:00
Akanksha Mahajan
8465cccde2 Posix API support for Async Read and Poll APIs (#9578)
Summary:
Provide support for Async Read and Poll in Posix file system using IOUring.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9578

Test Plan: In progress

Reviewed By: anand1976

Differential Revision: D34690256

Pulled By: akankshamahajan15

fbshipit-source-id: 291cbd1380a3cb904b726c34c0560d1b2ce44a2e
2022-03-10 18:28:31 -08:00
Baptiste Lemaire
7bed6595f3 Fix mempurge crash reported in #8958 (#9671)
Summary:
Change the `MemPurge` code to address a failure during a crash test reported in https://github.com/facebook/rocksdb/issues/8958.

### Details and results of the crash investigation:
These failures happened in a specific scenario where the list of immutable tables was composed of 2 or more memtables, and the last memtable was the output of a previous `Mempurge` operation. Because the `PickMemtablesToFlush` function included a sorting of the memtables (previous PR related to the Mempurge project), and because the `VersionEdit` of the flush class is piggybacked onto a single one of these memtables, the `VersionEdit` was not properly selected and applied to the `VersionSet` of the DB. Since the `VersionSet` was not edited properly, the database was losing track of the SST file created during the flush process, which was subsequently deleted (and as you can expect, caused the tests to crash).
The following command consistently failed, which was quite convenient to investigate the issue:
`$ while rm -rf /dev/shm/single_stress && ./db_stress --clear_column_family_one_in=0 --column_families=1 --db=/dev/shm/single_stress --experimental_mempurge_threshold=5.493146827397074 --flush_one_in=10000 --reopen=0 --write_buffer_size=262144 --value_size_mult=33 --max_write_buffer_number=3 -ops_per_thread=10000; do : ; done`

### Solution proposed
The memtables are no longer sorted based on their `memtableID` in the `PickMemtablesToFlush` function. Additionally, the `next_log_number` of the memtable created as an output of the `Mempurge` function now takes in the correct value (the log number of the first memtable being mempurged). Finally, the VersionEdit object of the flush class now takes the maximum `next_log_number` of the stack of memtables being flushed, which doesnt change anything when Mempurge is `off` but becomes necessary when Mempurge is `on`.

### Testing of the solution
The following command no longer fails:
``$ while rm -rf /dev/shm/single_stress && ./db_stress --clear_column_family_one_in=0 --column_families=1 --db=/dev/shm/single_stress --experimental_mempurge_threshold=5.493146827397074 --flush_one_in=10000 --reopen=0 --write_buffer_size=262144 --value_size_mult=33 --max_write_buffer_number=3 -ops_per_thread=10000; do : ; done``
Additionally, I ran `db_crashtest` (`whitebox` and `blackbox`) for 2.5 hours with MemPurge on and did not observe any crash.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9671

Reviewed By: pdillinger

Differential Revision: D34697424

Pulled By: bjlemaire

fbshipit-source-id: d1ab675b361904351ac81a35c184030e52222874
2022-03-10 15:16:55 -08:00
Andrew Kryczka
062396af15 Avoid popcnt on Windows when unavailable and in portable builds (#9680)
Summary:
Fixes https://github.com/facebook/rocksdb/issues/9560. Only use popcnt intrinsic when HAVE_SSE42 is set. Also avoid setting it based on compiler test in portable builds because such test will pass on MSVC even without proper arch flags (ref: https://devblogs.microsoft.com/oldnewthing/20201026-00/?p=104397).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9680

Test Plan: verified the combinations of -DPORTABLE and -DFORCE_SSE42 produce expected compiler flags on Linux. Verified MSVC build using PORTABLE=1 (in CircleCI) does not set HAVE_SSE42.

Reviewed By: pdillinger

Differential Revision: D34739033

Pulled By: ajkr

fbshipit-source-id: d10456f3392945fc3e59430a1777840f7b60b276
2022-03-09 21:07:31 -08:00
Siddhartha Roychowdhury
fec4403ff1 Integrate WAL compression into log reader/writer. (#9642)
Summary:
Integrate the streaming compress/uncompress API into WAL compression.
The streaming compression object is stored in the log_writer along with a reusable output buffer to store the compressed buffer(s).
The streaming uncompress object is stored in the log_reader along with a reusable output buffer to store the uncompressed buffer(s).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9642

Test Plan:
Added unit tests to verify different scenarios - large buffers, split compressed buffers, etc.

Future optimizations:
The overhead for small records is quite high, so it makes sense to compress only buffers above a certain threshold and use a separate record type to indicate that those records are compressed.

Reviewed By: anand1976

Differential Revision: D34709167

Pulled By: sidroyc

fbshipit-source-id: a37a3cd1301adff6152fb3fcd23726106af07dd4
2022-03-09 15:49:53 -08:00
Yanqin Jin
565fcead22 Fix clang-analyze by adding assertion (#9682)
Summary:
Clang-analyze complains about potential nullptr dereference.
Fix by adding an assertion to make clang happy.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9682

Test Plan: USE_CLANG=1 make -j20 analyze_incremental

Reviewed By: ltamasi

Differential Revision: D34755210

Pulled By: riversand963

fbshipit-source-id: 948e1899846ee1aa05a1b500a11ff43b0b412e0a
2022-03-09 10:13:02 -08:00
Yanqin Jin
3b6dc049f7 Support user-defined timestamps in write-committed txns (#9629)
Summary:
Pull Request resolved: https://github.com/facebook/rocksdb/pull/9629

Pessimistic transactions use pessimistic concurrency control, i.e. locking. Keys are
locked upon first operation that writes the key or has the intention of writing. For example,
`PessimisticTransaction::Put()`, `PessimisticTransaction::Delete()`,
`PessimisticTransaction::SingleDelete()` will write to or delete a key, while
`PessimisticTransaction::GetForUpdate()` is used by application to indicate
to RocksDB that the transaction has the intention of performing write operation later
in the same transaction.
Pessimistic transactions support two-phase commit (2PC). A transaction can be
`Prepared()`'ed and then `Commit()`. The prepare phase is similar to a promise: once
`Prepare()` succeeds, the transaction has acquired the necessary resources to commit.
The resources include locks, persistence of WAL, etc.
Write-committed transaction is the default pessimistic transaction implementation. In
RocksDB write-committed transaction, `Prepare()` will write data to the WAL as a prepare
section. `Commit()` will write a commit marker to the WAL and then write data to the
memtables. While writing to the memtables, different keys in the transaction's write batch
will be assigned different sequence numbers in ascending order.
Until commit/rollback, the transaction holds locks on the keys so that no other transaction
can write to the same keys. Furthermore, the keys' sequence numbers represent the order
in which they are committed and should be made visible. This is convenient for us to
implement support for user-defined timestamps.
Since column families with and without timestamps can co-exist in the same database,
a transaction may or may not involve timestamps. Based on this observation, we add two
optional members to each `PessimisticTransaction`, `read_timestamp_` and
`commit_timestamp_`. If no key in the transaction's write batch has timestamp, then
setting these two variables do not have any effect. For the rest of this commit, we discuss
only the cases when these two variables are meaningful.

read_timestamp_ is used mainly for validation, and should be set before first call to
`GetForUpdate()`. Otherwise, the latter will return non-ok status. `GetForUpdate()` calls
`TryLock()` that can verify if another transaction has written the same key since
`read_timestamp_` till this call to `GetForUpdate()`. If another transaction has indeed
written the same key, then validation fails, and RocksDB allows this transaction to
refine `read_timestamp_` by increasing it. Note that a transaction can still use `Get()`
with a different timestamp to read, but the result of the read should not be used to
determine data that will be written later.

commit_timestamp_ must be set after finishing writing and before transaction commit.
This applies to both 2PC and non-2PC cases. In the case of 2PC, it's usually set after
prepare phase succeeds.

We currently require that the commit timestamp be chosen after all keys are locked. This
means we disallow the `TransactionDB`-level APIs if user-defined timestamp is used
by the transaction. Specifically, calling `PessimisticTransactionDB::Put()`,
`PessimisticTransactionDB::Delete()`, `PessimisticTransactionDB::SingleDelete()`,
etc. will return non-ok status because they specify timestamps before locking the keys.
Users are also prompted to use the `Transaction` APIs when they receive the non-ok status.

Reviewed By: ltamasi

Differential Revision: D31822445

fbshipit-source-id: b82abf8e230216dc89cc519564a588224a88fd43
2022-03-08 16:20:59 -08:00
Hui Xiao
ca0ef54f16 Rate-limit automatic WAL flush after each user write (#9607)
Summary:
**Context:**
WAL flush is currently not rate-limited by `Options::rate_limiter`. This PR is to provide rate-limiting to auto WAL flush, the one that automatically happen after each user write operation (i.e, `Options::manual_wal_flush == false`), by adding `WriteOptions::rate_limiter_options`.

Note that we are NOT rate-limiting WAL flush that do NOT automatically happen after each user write, such as  `Options::manual_wal_flush == true + manual FlushWAL()` (rate-limiting multiple WAL flushes),  for the benefits of:
- being consistent with [ReadOptions::rate_limiter_priority](https://github.com/facebook/rocksdb/blob/7.0.fb/include/rocksdb/options.h#L515)
- being able to turn off some WAL flush's rate-limiting but not all (e.g, turn off specific the WAL flush of a critical user write like a service's heartbeat)

`WriteOptions::rate_limiter_options` only accept `Env::IO_USER` and `Env::IO_TOTAL` currently due to an implementation constraint.
- The constraint is that we currently queue parallel writes (including WAL writes) based on FIFO policy which does not factor rate limiter priority into this layer's scheduling. If we allow lower priorities such as `Env::IO_HIGH/MID/LOW` and such writes specified with lower priorities occurs before ones specified with higher priorities (even just by a tiny bit in arrival time), the former would have blocked the latter, leading to a "priority inversion" issue and contradictory to what we promise for rate-limiting priority. Therefore we only allow `Env::IO_USER` and `Env::IO_TOTAL`  right now before improving that scheduling.

A pre-requisite to this feature is to support operation-level rate limiting in `WritableFileWriter`, which is also included in this PR.

**Summary:**
- Renamed test suite `DBRateLimiterTest to DBRateLimiterOnReadTest` for adding a new test suite
- Accept `rate_limiter_priority` in `WritableFileWriter`'s private and public write functions
- Passed `WriteOptions::rate_limiter_options` to `WritableFileWriter` in the path of automatic WAL flush.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9607

Test Plan:
- Added new unit test to verify existing flush/compaction rate-limiting does not break, since `DBTest, RateLimitingTest` is disabled and current db-level rate-limiting tests focus on read only (e.g, `db_rate_limiter_test`, `DBTest2, RateLimitedCompactionReads`).
- Added new unit test `DBRateLimiterOnWriteWALTest, AutoWalFlush`
- `strace -ftt -e trace=write ./db_bench -benchmarks=fillseq -db=/dev/shm/testdb -rate_limit_auto_wal_flush=1 -rate_limiter_bytes_per_sec=15 -rate_limiter_refill_period_us=1000000 -write_buffer_size=100000000 -disable_auto_compactions=1 -num=100`
   - verified that WAL flush(i.e, system-call _write_) were chunked into 15 bytes and each _write_ was roughly 1 second apart
   - verified the chunking disappeared when `-rate_limit_auto_wal_flush=0`
- crash test: `python3 tools/db_crashtest.py blackbox --disable_wal=0  --rate_limit_auto_wal_flush=1 --rate_limiter_bytes_per_sec=10485760 --interval=10` killed as normal

**Benchmarked on flush/compaction to ensure no performance regression:**
- compaction with rate-limiting  (see table 1, avg over 1280-run):  pre-change: **915635 micros/op**; post-change:
   **907350 micros/op (improved by 0.106%)**
```
#!/bin/bash
TEST_TMPDIR=/dev/shm/testdb
START=1
NUM_DATA_ENTRY=8
N=10

rm -f compact_bmk_output.txt compact_bmk_output_2.txt dont_care_output.txt
for i in $(eval echo "{$START..$NUM_DATA_ENTRY}")
do
    NUM_RUN=$(($N*(2**($i-1))))
    for j in $(eval echo "{$START..$NUM_RUN}")
    do
       ./db_bench --benchmarks=fillrandom -db=$TEST_TMPDIR -disable_auto_compactions=1 -write_buffer_size=6710886 > dont_care_output.txt && ./db_bench --benchmarks=compact -use_existing_db=1 -db=$TEST_TMPDIR -level0_file_num_compaction_trigger=1 -rate_limiter_bytes_per_sec=100000000 | egrep 'compact'
    done > compact_bmk_output.txt && awk -v NUM_RUN=$NUM_RUN '{sum+=$3;sum_sqrt+=$3^2}END{print sum/NUM_RUN, sqrt(sum_sqrt/NUM_RUN-(sum/NUM_RUN)^2)}' compact_bmk_output.txt >> compact_bmk_output_2.txt
done
```
- compaction w/o rate-limiting  (see table 2, avg over 640-run):  pre-change: **822197 micros/op**; post-change: **823148 micros/op (regressed by 0.12%)**
```
Same as above script, except that -rate_limiter_bytes_per_sec=0
```
- flush with rate-limiting (see table 3, avg over 320-run, run on the [patch](ee5c6023a9) to augment current db_bench ): pre-change: **745752 micros/op**; post-change: **745331 micros/op (regressed by 0.06 %)**
```
 #!/bin/bash
TEST_TMPDIR=/dev/shm/testdb
START=1
NUM_DATA_ENTRY=8
N=10

rm -f flush_bmk_output.txt flush_bmk_output_2.txt

for i in $(eval echo "{$START..$NUM_DATA_ENTRY}")
do
    NUM_RUN=$(($N*(2**($i-1))))
    for j in $(eval echo "{$START..$NUM_RUN}")
    do
       ./db_bench -db=$TEST_TMPDIR -write_buffer_size=1048576000 -num=1000000 -rate_limiter_bytes_per_sec=100000000 -benchmarks=fillseq,flush | egrep 'flush'
    done > flush_bmk_output.txt && awk -v NUM_RUN=$NUM_RUN '{sum+=$3;sum_sqrt+=$3^2}END{print sum/NUM_RUN, sqrt(sum_sqrt/NUM_RUN-(sum/NUM_RUN)^2)}' flush_bmk_output.txt >> flush_bmk_output_2.txt
done

```
- flush w/o rate-limiting (see table 4, avg over 320-run, run on the [patch](ee5c6023a9) to augment current db_bench): pre-change: **487512 micros/op**, post-change: **485856 micors/ops (improved by 0.34%)**
```
Same as above script, except that -rate_limiter_bytes_per_sec=0
```

| table 1 - compact with rate-limiting|
#-run | (pre-change) avg micros/op | std micros/op | (post-change)  avg micros/op | std micros/op | change in avg micros/op  (%)
-- | -- | -- | -- | -- | --
10 | 896978 | 16046.9 | 901242 | 15670.9 | 0.475373978
20 | 893718 | 15813 | 886505 | 17544.7 | -0.8070778478
40 | 900426 | 23882.2 | 894958 | 15104.5 | -0.6072681153
80 | 906635 | 21761.5 | 903332 | 23948.3 | -0.3643141948
160 | 898632 | 21098.9 | 907583 | 21145 | 0.9960695813
3.20E+02 | 905252 | 22785.5 | 908106 | 25325.5 | 0.3152713278
6.40E+02 | 905213 | 23598.6 | 906741 | 21370.5 | 0.1688000504
**1.28E+03** | **908316** | **23533.1** | **907350** | **24626.8** | **-0.1063506533**
average over #-run | 901896.25 | 21064.9625 | 901977.125 | 20592.025 | 0.008967217682

| table 2 - compact w/o rate-limiting|
#-run | (pre-change) avg micros/op | std micros/op | (post-change)  avg micros/op | std micros/op | change in avg micros/op  (%)
-- | -- | -- | -- | -- | --
10 | 811211 | 26996.7 | 807586 | 28456.4 | -0.4468627768
20 | 815465 | 14803.7 | 814608 | 28719.7 | -0.105093413
40 | 809203 | 26187.1 | 797835 | 25492.1 | -1.404839082
80 | 822088 | 28765.3 | 822192 | 32840.4 | 0.01265071379
160 | 821719 | 36344.7 | 821664 | 29544.9 | -0.006693285661
3.20E+02 | 820921 | 27756.4 | 821403 | 28347.7 | 0.05871454135
**6.40E+02** | **822197** | **28960.6** | **823148** | **30055.1** | **0.1156657103**
average over #-run | 8.18E+05 | 2.71E+04 | 8.15E+05 | 2.91E+04 |  -0.25

| table 3 - flush with rate-limiting|
#-run | (pre-change) avg micros/op | std micros/op | (post-change)  avg micros/op | std micros/op | change in avg micros/op  (%)
-- | -- | -- | -- | -- | --
10 | 741721 | 11770.8 | 740345 | 5949.76 | -0.1855144994
20 | 735169 | 3561.83 | 743199 | 9755.77 | 1.09226586
40 | 743368 | 8891.03 | 742102 | 8683.22 | -0.1703059588
80 | 742129 | 8148.51 | 743417 | 9631.58| 0.1735547324
160 | 749045 | 9757.21 | 746256 | 9191.86 | -0.3723407806
**3.20E+02** | **745752** | **9819.65** | **745331** | **9840.62** | **-0.0564530836**
6.40E+02 | 749006 | 11080.5 | 748173 | 10578.7 | -0.1112140624
average over #-run | 743741.4286 | 9004.218571 | 744117.5714 | 9090.215714 | 0.05057441238

| table 4 - flush w/o rate-limiting|
#-run | (pre-change) avg micros/op | std micros/op | (post-change)  avg micros/op | std micros/op | change in avg micros/op (%)
-- | -- | -- | -- | -- | --
10 | 477283 | 24719.6 | 473864 | 12379 | -0.7163464863
20 | 486743 | 20175.2 | 502296 | 23931.3 | 3.195320734
40 | 482846 | 15309.2 | 489820 | 22259.5 | 1.444352858
80 | 491490 | 21883.1 | 490071 | 23085.7 | -0.2887139108
160 | 493347 | 28074.3 | 483609 | 21211.7 | -1.973864238
**3.20E+02** | **487512** | **21401.5** | **485856** | **22195.2** | **-0.3396839462**
6.40E+02 | 490307 | 25418.6 | 485435 | 22405.2 | -0.9936631539
average over #-run | 4.87E+05 | 2.24E+04 | 4.87E+05 | 2.11E+04 | 0.00E+00

Reviewed By: ajkr

Differential Revision: D34442441

Pulled By: hx235

fbshipit-source-id: 4790f13e1e5c0a95ae1d1cc93ffcf69dc6e78bdd
2022-03-08 13:19:39 -08:00
Ezgi Çiçek
27d6ef8e60 Rename mutable_cf_options to signify explicity copy (#9666)
Summary:
Signify explicit copy with comment and better name for variable `mutable_cf_options`

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9666

Reviewed By: riversand963

Differential Revision: D34680934

Pulled By: ezgicicek

fbshipit-source-id: b64ef18725fe523835d14ceb4b29bcdfe493f8ed
2022-03-08 11:26:40 -08:00
GuKaifeng
c967436453 remove redundant assignment code for member state (#9665)
Summary:
Remove redundant assignment code for member `state` in the constructor of `ImmutableDBOptions`.
There are two identical and redundant statements `stats = statistics.get();` in lines 740 and 748 of the code.
This commit removed the line 740.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9665

Reviewed By: ajkr

Differential Revision: D34686649

Pulled By: riversand963

fbshipit-source-id: 8f246ece382b6845528f4e2c843ce09bb66b2b0f
2022-03-08 11:03:56 -08:00
Peter Dillinger
4a9ae4f713 Avoid .trash handling race in db_stress Checkpoint (#9673)
Summary:
The shared SstFileManager in db_stress can create background
work that races with TestCheckpoint such that DestroyDir fails because
of file rename while it is running. Analogous to change already made
for TestBackupRestore

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9673

Test Plan:
make blackbox_crash_test for a while with
checkpoint_one_in=100

Reviewed By: ajkr

Differential Revision: D34702215

Pulled By: pdillinger

fbshipit-source-id: ac3e166efa28cba6c6f4b9b391e799394603ebfd
2022-03-08 08:36:25 -08:00
Jay Zhuang
36aec94d85 compression_per_level should be used for flush and changeable (#9658)
Summary:
- Make `compression_per_level` dynamical changeable with `SetOptions`;
- Fix a bug that `compression_per_level` is not used for flush;

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9658

Test Plan: CI

Reviewed By: ajkr

Differential Revision: D34700749

Pulled By: jay-zhuang

fbshipit-source-id: a23b9dfa7ad03d393c1d71781d19e91de796f49c
2022-03-07 18:06:19 -08:00
Peter Dillinger
9b8b8b1504 Remove remaining SKIP_LINK=1 in circleci config (#9669)
Summary:
Should be unnecessary

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9669

Test Plan: CI

Reviewed By: ajkr

Differential Revision: D34689277

Pulled By: pdillinger

fbshipit-source-id: 5d44de1f851503fd1777b869c06c330f3c4deade
2022-03-07 15:23:25 -08:00
Yanqin Jin
785b804a9a Update Githubpages version (#9670)
Summary:
According to https://pages.github.com/versions/, bump the version from 209 to
225 to address https://github.com/facebook/rocksdb/security/dependabot/2

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9670

Test Plan:
```
cd docs && bundle check
```

Reviewed By: ajkr

Differential Revision: D34690813

Pulled By: riversand963

fbshipit-source-id: c9b5fb8a5e3f2a176672480bcb4068befa3e2158
2022-03-07 14:48:06 -08:00
anand76
7574841aac Fix issue #9627 (#9657)
Summary:
SMB mounts do not support hard links. The ENOTSUP error code is
returned, which should be interpreted by PosixFileSystem as
IOStatus::NotSupported().

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9657

Reviewed By: mrambacher

Differential Revision: D34634783

Pulled By: anand1976

fbshipit-source-id: 0d57f5b2e6118e4c20e9ed1a293327428c3aecac
2022-03-07 11:39:31 -08:00
Adam Retter
dab19afe56 Fix RocksJava releases for macOS (#9662)
Summary:
Addresses the problems described in https://github.com/facebook/rocksdb/pull/9254#issuecomment-1054598516 and https://github.com/facebook/rocksdb/pull/9254#issuecomment-1059574837 that have blocked a RocksJava release

**NOTE** Also needs to be ported to 6.29.fb branch.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9662

Reviewed By: ajkr

Differential Revision: D34689200

Pulled By: pdillinger

fbshipit-source-id: c62fe34c54f05be5a00ee1daec8ec7454baa5eb8
2022-03-07 10:50:52 -08:00
Dmitry Vinnik
f20b674796 Adding Social Banner in Support of Ukraine (#9652)
Summary:
Our mission at [Meta Open Source](https://opensource.facebook.com/) is to empower communities through open source, and we believe that it means building a welcoming and safe environment for all. As a part of this work, we are adding this banner in support for Ukraine during this crisis.

## Testing
<img width="1080" alt="image" src="https://user-images.githubusercontent.com/12485205/156454047-9c153135-f3a6-41f7-adbe-8139759565ae.png">

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9652

Reviewed By: jay-zhuang

Differential Revision: D34647211

Pulled By: dmitryvinn-fb

fbshipit-source-id: b89cdc7eafcc58b1f503ee8e1939e43bffcb3b3f
2022-03-04 14:51:59 -08:00
Peter Dillinger
ce60d0cbe5 Test refactoring for Backups+Temperatures (#9655)
Summary:
In preparation for more support for file Temperatures in BackupEngine,
this change does some test refactoring:
* Move DBTest2::BackupFileTemperature test to
BackupEngineTest::FileTemperatures, with some updates to make it work
in the new home. This test will soon be expanded for deeper backup work.
* Move FileTemperatureTestFS from db_test2.cc to db_test_util.h, to
support sharing because of above moved test, but split off the "no link"
part to the test needing it.
* Use custom FileSystems in backupable_db_test rather than custom Envs,
because going through Env file interfaces doesn't support temperatures.
* Fix RemapFileSystem to map DirFsyncOptions::renamed_new_name
parameter to FsyncWithDirOptions, which was required because this
limitation caused a crash only after moving to higher fidelity of
FileSystem interface (vs. LegacyDirectoryWrapper throwing away some
parameter details)
* `backupable_options_` -> `engine_options_` as part of the ongoing
work to get rid of the obsolete "backupable" naming.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9655

Test Plan: test code updates only

Reviewed By: jay-zhuang

Differential Revision: D34622183

Pulled By: pdillinger

fbshipit-source-id: f24b7a596a89b9e089e960f4e5d772575513e93f
2022-03-04 12:32:30 -08:00
Hui Xiao
fc61e98ae6 Attempt to deflake DBLogicalBlockSizeCacheTest.CreateColumnFamilies (#9516)
Summary:
**Context:**
`DBLogicalBlockSizeCacheTest.CreateColumnFamilies` is flaky on a rare occurrence of assertion failure below
```
db/db_logical_block_size_cache_test.cc:210
Expected equality of these values:
  1
  cache_->GetRefCount(cf_path_0_)
    Which is: 2
```

Root-cause: `ASSERT_OK(db->DestroyColumnFamilyHandle(cfs[0]));` in the test may not successfully decrease the ref count of `cf_path_0_` since the decreasing only happens in the clean-up of `ColumnFamilyData` when `ColumnFamilyData` has no referencing to it, which may not be true when `db->DestroyColumnFamilyHandle(cfs[0])` is called since background work such as `DumpStats()` can hold reference to that `ColumnFamilyData` (suggested and repro-d by ajkr ). Similar case `ASSERT_OK(db->DestroyColumnFamilyHandle(cfs[1]));`.

See following for a deterministic repro:
```
 diff --git a/db/db_impl/db_impl.cc b/db/db_impl/db_impl.cc
index 196b428a3..4e7a834c4 100644
 --- a/db/db_impl/db_impl.cc
+++ b/db/db_impl/db_impl.cc
@@ -956,10 +956,16 @@ void DBImpl::DumpStats() {
         // near-atomically.
         // Get a ref before unlocking
         cfd->Ref();
+        if (cfd->GetName() == "cf1" || cfd->GetName() == "cf2") {
+          TEST_SYNC_POINT("DBImpl::DumpStats:PostCFDRef");
+        }
         {
           InstrumentedMutexUnlock u(&mutex_);
           cfd->internal_stats()->CollectCacheEntryStats(/*foreground=*/false);
         }
+        if (cfd->GetName() == "cf1" || cfd->GetName() == "cf2") {
+          TEST_SYNC_POINT("DBImpl::DumpStats::PreCFDUnrefAndTryDelete");
+        }
         cfd->UnrefAndTryDelete();
       }
     }
 diff --git a/db/db_logical_block_size_cache_test.cc b/db/db_logical_block_size_cache_test.cc
index 1057871c9..c3872c036 100644
 --- a/db/db_logical_block_size_cache_test.cc
+++ b/db/db_logical_block_size_cache_test.cc
@@ -9,6 +9,7 @@
 #include "env/io_posix.h"
 #include "rocksdb/db.h"
 #include "rocksdb/env.h"
+#include "test_util/sync_point.h"

 namespace ROCKSDB_NAMESPACE {
 class EnvWithCustomLogicalBlockSizeCache : public EnvWrapper {
@@ -183,6 +184,15 @@ TEST_F(DBLogicalBlockSizeCacheTest, CreateColumnFamilies) {
   ASSERT_EQ(1, cache_->GetRefCount(dbname_));

   std::vector<ColumnFamilyHandle*> cfs;
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
+      {{"DBLogicalBlockSizeCacheTest::CreateColumnFamilies::PostSetupTwoCFH",
+        "DBImpl::DumpStats:StartRunning"},
+       {"DBImpl::DumpStats:PostCFDRef",
+        "DBLogicalBlockSizeCacheTest::CreateColumnFamilies::PreDeleteTwoCFH"},
+       {"DBLogicalBlockSizeCacheTest::CreateColumnFamilies::"
+        "PostFinishCheckingRef",
+        "DBImpl::DumpStats::PreCFDUnrefAndTryDelete"}});
   ASSERT_OK(db->CreateColumnFamilies(cf_options, {"cf1", "cf2"}, &cfs));
   ASSERT_EQ(2, cache_->Size());
   ASSERT_TRUE(cache_->Contains(dbname_));
@@ -190,7 +200,7 @@ TEST_F(DBLogicalBlockSizeCacheTest, CreateColumnFamilies) {
   ASSERT_TRUE(cache_->Contains(cf_path_0_));
   ASSERT_EQ(2, cache_->GetRefCount(cf_path_0_));
   }

    // Delete one handle will not drop cache because another handle is still
   // referencing cf_path_0_.
+  TEST_SYNC_POINT(
+      "DBLogicalBlockSizeCacheTest::CreateColumnFamilies::PostSetupTwoCFH");
+  TEST_SYNC_POINT(
+      "DBLogicalBlockSizeCacheTest::CreateColumnFamilies::PreDeleteTwoCFH");
   ASSERT_OK(db->DestroyColumnFamilyHandle(cfs[0]));
   ASSERT_EQ(2, cache_->Size());
   ASSERT_TRUE(cache_->Contains(dbname_));
@@ -209,16 +221,20 @@ TEST_F(DBLogicalBlockSizeCacheTest, CreateColumnFamilies) {
   ASSERT_TRUE(cache_->Contains(cf_path_0_));
    // Will fail
   ASSERT_EQ(1, cache_->GetRefCount(cf_path_0_));

   // Delete the last handle will drop cache.
   ASSERT_OK(db->DestroyColumnFamilyHandle(cfs[1]));
   ASSERT_EQ(1, cache_->Size());
   ASSERT_TRUE(cache_->Contains(dbname_));
   // Will fail
   ASSERT_EQ(1, cache_->GetRefCount(dbname_));

+  TEST_SYNC_POINT(
+      "DBLogicalBlockSizeCacheTest::CreateColumnFamilies::"
+      "PostFinishCheckingRef");
   delete db;
   ASSERT_EQ(0, cache_->Size());
   ASSERT_OK(DestroyDB(dbname_, options,
       {{"cf1", cf_options}, {"cf2", cf_options}}));
+  ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
 }
```

**Summary**
- Removed the flaky assertion
- Clarified the comments for the test

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9516

Test Plan:
- CI
- Monitor for future flakiness

Reviewed By: ajkr

Differential Revision: D34055232

Pulled By: hx235

fbshipit-source-id: 9bf83ae5fa88bf6fc829876494d4692082e4c357
2022-03-04 11:35:28 -08:00
Hui Xiao
4a776d81cc Dynamic toggling of BlockBasedTableOptions::detect_filter_construct_corruption (#9654)
Summary:
**Context/Summary:**
As requested, `BlockBasedTableOptions::detect_filter_construct_corruption` can now be dynamically configured using `DB::SetOptions` after this PR

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9654

Test Plan: - New unit test

Reviewed By: pdillinger

Differential Revision: D34622609

Pulled By: hx235

fbshipit-source-id: c06773ef3d029e6bf1724d3a72dffd37a8ec66d9
2022-03-04 10:35:08 -08:00
anand76
3362a730dc Avoid usage of ReopenWritableFile in db_stress (#9649)
Summary:
The UniqueIdVerifier constructor currently calls ReopenWritableFile on
the FileSystem, which might not be supported. Instead of relying on
reopening the unique IDs file for writing, create a new file and copy
the original contents.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9649

Test Plan: Run db_stress

Reviewed By: pdillinger

Differential Revision: D34572307

Pulled By: anand1976

fbshipit-source-id: 3a777908582d79dae57488d4278bad126774f698
2022-03-04 10:30:10 -08:00
Jay Zhuang
67542bfab5 Improve build speed (#9605)
Summary:
Improve the CI build speed:
- split the macos tests to 2 parallel jobs
- split tsan tests to 2 parallel jobs
- move non-shm tests to nightly build
- slow jobs use lager machine
- fast jobs use smaller machine
- add microbench to no-test jobs
- add run-microbench to nightly build

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9605

Reviewed By: riversand963

Differential Revision: D34358982

Pulled By: jay-zhuang

fbshipit-source-id: d5091b3f4ef6d25c5c37920fb614f3342ee60e4a
2022-03-03 11:58:51 -08:00
Yanqin Jin
659a16d52b Fix bug causing incorrect data returned by snapshot read (#9648)
Summary:
This bug affects use cases that meet the following conditions
- (has only the default column family or disables WAL) and
- has at least one event listener
- atomic flush is NOT affected.

If the above conditions meet, then RocksDB can release the db mutex before picking all the
existing memtables to flush. In the meantime, a snapshot can be created and db's sequence
number can still be incremented. The upcoming flush will ignore this snapshot.
A later read using this snapshot can return incorrect result.

To fix this issue, we call the listeners callbacks after picking the memtables so that we avoid
creating snapshots during this interval.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9648

Test Plan: make check

Reviewed By: ajkr

Differential Revision: D34555456

Pulled By: riversand963

fbshipit-source-id: 1438981e9f069a5916686b1a0ad7627f734cf0ee
2022-03-02 21:03:14 -08:00
Yuriy Chernyshov
73fd589b1a Do not rely on ADL when invoking std::max_element (#9608)
Summary:
Certain STLs use raw pointers and ADL does not work for them.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9608

Reviewed By: ajkr

Differential Revision: D34583012

Pulled By: riversand963

fbshipit-source-id: 7de6bbc8a080c3e7243ce0d758fe83f1663168aa
2022-03-02 17:41:02 -08:00
jingkai.yuan
926ee13811 Fix corruption error when compressing blob data with zlib. (#9572)
Summary:
The plain data length may not be big enough if the compression actually expands data. So use deflateBound() to get the upper limit on the compressed output before deflate().

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9572

Reviewed By: riversand963

Differential Revision: D34326475

Pulled By: ajkr

fbshipit-source-id: 4b679cb7a83a62782a127785b4d5eb9aa4646449
2022-03-02 16:35:21 -08:00