Commit Graph

11 Commits

Author SHA1 Message Date
Andrew Kryczka
791723c1ec Fix race condition in db_stress thread setup (#9314)
Summary:
We need to grab `SharedState`'s mutex while calling `IncThreads()` or `IncBgThreads()`. Otherwise the newly launched threads can simultaneously access the thread counters to check if every thread has finished initializing.

Repro command:

```
$ rm -rf /dev/shm/rocksdb/rocksdb_crashtest_{whitebox,expected}/ && mkdir -p /dev/shm/rocksdb/rocksdb_crashtest_{whitebox,expected}/ && ./db_stress --acquire_snapshot_one_in=10000 --atomic_flush=1 --avoid_flush_during_recovery=0 --avoid_unnecessary_blocking_io=1 --backup_max_size=104857600 --backup_one_in=100000 --batch_protection_bytes_per_key=0 --block_size=16384 --bloom_bits=131.8094496796033 --bottommost_compression_type=zlib --cache_index_and_filter_blocks=1 --cache_size=1048576 --checkpoint_one_in=1000000 --checksum_type=kCRC32c --clear_column_family_one_in=0 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_style=1 --compaction_ttl=0 --compression_max_dict_buffer_bytes=134217727 --compression_max_dict_bytes=16384 --compression_parallel_threads=1 --compression_type=zstd --compression_zstd_max_train_bytes=65536 --continuous_verification_interval=0 --db=/dev/shm/rocksdb/rocksdb_crashtest_whitebox --db_write_buffer_size=8388608 --delpercent=5 --delrangepercent=0 --destroy_db_initially=0 --disable_wal=1 --enable_compaction_filter=0 --enable_pipelined_write=0 --fail_if_options_file_error=1 --file_checksum_impl=crc32c --flush_one_in=1000000 --format_version=5 --get_current_wal_file_one_in=0 --get_live_files_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --index_block_restart_interval=15 --index_type=3 --iterpercent=10 --key_len_percent_dist=1,30,69 --level_compaction_dynamic_level_bytes=True --log2_keys_per_lock=22 --long_running_snapshots=0 --mark_for_compaction_one_file_in=10 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --max_key=1000000 --max_key_len=3 --max_manifest_file_size=1073741824 --max_write_batch_group_size_bytes=1048576 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=4194304 --memtablerep=skip_list --mmap_read=1 --mock_direct_io=False --nooverwritepercent=1 --open_files=500000 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=32 --open_write_fault_one_in=0 --ops_per_thread=20000 --optimize_filters_for_memory=1 --paranoid_file_checks=0 --partition_filters=0 --partition_pinning=0 --pause_background_one_in=1000000 --periodic_compaction_seconds=0 --prefixpercent=5 --prepopulate_block_cache=1 --progress_reports=0 --read_fault_one_in=1000 --readpercent=45 --recycle_log_file_num=1 --reopen=0 --ribbon_starting_level=999 --secondary_cache_fault_one_in=32 --snapshot_hold_ops=100000 --sst_file_manager_bytes_per_sec=104857600 --sst_file_manager_bytes_per_truncate=1048576 --subcompactions=2 --sync=0 --sync_fault_injection=False --target_file_size_base=2097152 --target_file_size_multiplier=2 --test_batches_snapshots=1 --test_cf_consistency=1 --top_level_index_pinning=0 --unpartitioned_pinning=0 --use_block_based_filter=1 --use_clock_cache=0 --use_direct_io_for_flush_and_compaction=0 --use_direct_reads=0 --use_full_merge_v1=1 --use_merge=0 --use_multiget=1 --user_timestamp_size=0 --verify_checksum=1 --verify_checksum_one_in=1000000 --verify_db_one_in=100000 --write_buffer_size=1048576 --write_dbid_to_manifest=1 --write_fault_one_in=0 --writepercent=35
```

TSAN error:

```
WARNING: ThreadSanitizer: data race (pid=2750142)
  Read of size 4 at 0x7ffc21d7f58c by thread T39 (mutexes: write M670895590377780496):
    #0 rocksdb::SharedState::AllInitialized() const db_stress_tool/db_stress_shared_state.h:204 (db_stress+0x4fd307)
    https://github.com/facebook/rocksdb/issues/1 rocksdb::ThreadBody(void*) db_stress_tool/db_stress_driver.cc:26 (db_stress+0x4fd307)
    https://github.com/facebook/rocksdb/issues/2 StartThreadWrapper env/env_posix.cc:454 (db_stress+0x84472f)

  Previous write of size 4 at 0x7ffc21d7f58c by main thread:
    #0 rocksdb::SharedState::IncThreads() db_stress_tool/db_stress_shared_state.h:194 (db_stress+0x4fd779)
    https://github.com/facebook/rocksdb/issues/1 rocksdb::RunStressTest(rocksdb::StressTest*) db_stress_tool/db_stress_driver.cc:78 (db_stress+0x4fd779)
    https://github.com/facebook/rocksdb/issues/2 rocksdb::db_stress_tool(int, char**) db_stress_tool/db_stress_tool.cc:348 (db_stress+0x4b97dc)
    https://github.com/facebook/rocksdb/issues/3 main db_stress_tool/db_stress.cc:21 (db_stress+0x47a351)

  Location is stack of main thread.

  Location is global '<null>' at 0x000000000000 ([stack]+0x00000001d58c)

  Mutex M670895590377780496 is already destroyed.

  Thread T39 (tid=2750211, running) created by main thread at:
    #0 pthread_create /home/engshare/third-party2/gcc/9.x/src/gcc-10.x/libsanitizer/tsan/tsan_interceptors.cc:964 (libtsan.so.0+0x613c3)
    https://github.com/facebook/rocksdb/issues/1 StartThread env/env_posix.cc:464 (db_stress+0x8463c2)
    https://github.com/facebook/rocksdb/issues/2 rocksdb::CompositeEnvWrapper::StartThread(void (*)(void*), void*) env/composite_env_wrapper.h:288 (db_stress+0x4bcd20)
    https://github.com/facebook/rocksdb/issues/3 rocksdb::EnvWrapper::StartThread(void (*)(void*), void*) include/rocksdb/env.h:1475 (db_stress+0x4bb950)
    https://github.com/facebook/rocksdb/issues/4 rocksdb::RunStressTest(rocksdb::StressTest*) db_stress_tool/db_stress_driver.cc:80 (db_stress+0x4fd9d2)
    https://github.com/facebook/rocksdb/issues/5 rocksdb::db_stress_tool(int, char**) db_stress_tool/db_stress_tool.cc:348 (db_stress+0x4b97dc)
    https://github.com/facebook/rocksdb/issues/6 main db_stress_tool/db_stress.cc:21 (db_stress+0x47a351)

 ThreadSanitizer: data race db_stress_tool/db_stress_shared_state.h:204 in rocksdb::SharedState::AllInitialized() const
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9314

Test Plan: verified repro command works after this PR.

Reviewed By: jay-zhuang

Differential Revision: D33217698

Pulled By: ajkr

fbshipit-source-id: 79358fe5adb779fc9dcf80643cc102d4b467fc38
2021-12-20 13:05:23 -08:00
Andrew Kryczka
84228e21e8 Fix shutdown in db_stress with -test_batches_snapshots=1 (#9313)
Summary:
The `SharedState` constructor had an early return in case of
`-test_batches_snapshots=1`. This early return caused `num_bg_threads_`
to never be incremented. Consequently, the driver thread could cleanup
objects like the `SharedState` while BG threads were still running and
accessing it, leading to crash.

The fix is to move the logic for counting threads (both FG and BG) to
the place they are launched. That way we can be sure the counts are
consistent, at least for now.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9313

Test Plan:
below command used to fail, now it passes.

```
$ ./db_stress --db=./test-db/ --expected_values_dir=./test-db-expected/ --max_key=100000 --ops_per_thread=1000 --sync_fault_injection=1 --clear_column_family_one_in=0 --destroy_db_initially=0 -reopen=0 -test_batches_snapshots=1
```

Reviewed By: jay-zhuang

Differential Revision: D33198670

Pulled By: ajkr

fbshipit-source-id: 126592dc1eb31998bc8f82ffbf5a0d4eb8dec317
2021-12-17 17:31:40 -08:00
mrambacher
3dff28cf9b Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033)
Summary:
For performance purposes, the lower level routines were changed to use a SystemClock* instead of a std::shared_ptr<SystemClock>.  The shared ptr has some performance degradation on certain hardware classes.

For most of the system, there is no risk of the pointer being deleted/invalid because the shared_ptr will be stored elsewhere.  For example, the ImmutableDBOptions stores the Env which has a std::shared_ptr<SystemClock> in it.  The SystemClock* within the ImmutableDBOptions is essentially a "short cut" to gain access to this constant resource.

There were a few classes (PeriodicWorkScheduler?) where the "short cut" property did not hold.  In those cases, the shared pointer was preserved.

Using db_bench readrandom perf_level=3 on my EC2 box, this change performed as well or better than 6.17:

6.17: readrandom   :      28.046 micros/op 854902 ops/sec;   61.3 MB/s (355999 of 355999 found)
6.18: readrandom   :      32.615 micros/op 735306 ops/sec;   52.7 MB/s (290999 of 290999 found)
PR: readrandom   :      27.500 micros/op 871909 ops/sec;   62.5 MB/s (367999 of 367999 found)

(Note that the times for 6.18 are prior to revert of the SystemClock).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8033

Reviewed By: pdillinger

Differential Revision: D27014563

Pulled By: mrambacher

fbshipit-source-id: ad0459eba03182e454391b5926bf5cdd45657b67
2021-03-15 04:34:11 -07:00
mrambacher
c7c7b07f06 More Makefile Cleanup (#7097)
Summary:
Cleans up some of the dependencies on test code in the Makefile while building tools:
- Moves the test::RandomString, DBBaseTest::RandomString into Random
- Moves the test::RandomHumanReadableString into Random
- Moves the DestroyDir method into file_utils
- Moves the SetupSyncPointsToMockDirectIO into sync_point.
- Moves the FaultInjection Env and FS classes under env

These changes allow all of the tools to build without dependencies on test_util, thereby simplifying the build dependencies.  By moving the FaultInjection code, the dependency in db_stress on different libraries for debug vs release was eliminated.

Tested both release and debug builds via Make and CMake for both static and shared libraries.

More work remains to clean up how the tools are built and remove some unnecessary dependencies.  There is also more work that should be done to get the Makefile and CMake to align in their builds -- what is in the libraries and the sizes of the executables are different.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7097

Reviewed By: riversand963

Differential Revision: D22463160

Pulled By: pdillinger

fbshipit-source-id: e19462b53324ab3f0b7c72459dbc73165cc382b2
2020-07-09 14:35:17 -07:00
Andrew Kryczka
775dc623ad add CompactionFilter to stress/crash tests (#6988)
Summary:
Added a `CompactionFilter` that is aware of the stress test's expected state. It only drops key versions that are already covered according to the expected state. It is incompatible with snapshots (same as all `CompactionFilter`s), so disables all snapshot-related features when used in the crash test.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6988

Test Plan:
running a minified blackbox crash test

```
$ TEST_TMPDIR=/dev/shm python tools/db_crashtest.py blackbox --max_key=1000000 -write_buffer_size=1048576 -max_bytes_for_level_base=4194304 -target_file_size_base=1048576 -value_size_mult=33 --interval=10 --duration=3600
```

Reviewed By: anand1976

Differential Revision: D22072888

Pulled By: ajkr

fbshipit-source-id: 727b9d7a90d5eab18be0ec6cd5a810712ac13320
2020-06-18 09:54:55 -07:00
Yanqin Jin
15d9f28da5 Add stress test for best-efforts recovery (#6819)
Summary:
Add crash test for the case of best-efforts recovery.
After a certain amount of time, we kill the db_stress process, randomly delete some certain table files and restart db_stress. Given the randomness of file deletion, it is difficult to verify against a reference for data correctness. Therefore, we just check that the db can restart successfully.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6819

Test Plan:
```
./db_stress -best_efforts_recovery=true -disable_wal=1 -reopen=0
./db_stress -best_efforts_recovery=true -disable_wal=0 -skip_verifydb=1 -verify_db_one_in=0 -continuous_verification_interval=0
make crash_test_with_best_efforts_recovery
```

Reviewed By: anand1976

Differential Revision: D21436753

Pulled By: riversand963

fbshipit-source-id: 0b3605c922a16c37ed17d5ab6682ca4240e47926
2020-06-12 19:27:46 -07:00
Yueh-Hsuan Chiang
5801af4646 Add env_fault_injection argument to db_stress (#6687)
Summary:
Add env_fault_injection argument to db_stress.  When enabled,
FaultInjectionTestEnv will be used instead.  Currently this
option does not support running with other env setting.

This will allow
us to later manually produce error when running db_crashtest.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6687

Test Plan:
make db_stress -j32
./db_stress --env_fault_injection
./db_stress --env_fault_injection --hdfs   // expect error message

Reviewed By: ajkr

Differential Revision: D21014683

Pulled By: yhchiang

fbshipit-source-id: 0724aeac37efd57adb72a37defe6dbd3bfa8106a
2020-04-16 11:13:44 -07:00
sdong
fdf882ded2 Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)
Summary:
When dynamically linking two binaries together, different builds of RocksDB from two sources might cause errors. To provide a tool for user to solve the problem, the RocksDB namespace is changed to a flag which can be overridden in build time.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6433

Test Plan: Build release, all and jtest. Try to build with ROCKSDB_NAMESPACE with another flag.

Differential Revision: D19977691

fbshipit-source-id: aa7f2d0972e1c31d75339ac48478f34f6cfcfb3e
2020-02-20 12:09:57 -08:00
sdong
338c149b92 crash_test to cover bottommost compression and some other changes (#6215)
Summary:
Several improvements to crash_test/stress_test:
(1) Stress_test to support an parameter of bottommost compression
(2) Rename those FLAGS_* variables that are not gflags to avoid confusion
(3) Crash_test to randomly generate compression type for bottommost compression with half the chance.
(4) Stress_test to sanitize unsupported compression type to snappy, so that crash_test to cover all possible compression types and people don't need to worry about they don't support all comrpession types in their environment.
(5) In crash_test, when generating db_stress command, sort arguments in alphabeta order, so that it is easier to find value for a specific argument.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6215

Test Plan: Run "make crash_test" for a while and see the botommost option shown in LOG files.

Differential Revision: D19171255

fbshipit-source-id: d7001e246c4ff9ee5760776eea0be97738650735
2019-12-20 16:14:52 -08:00
Yanqin Jin
670a916d01 Add more verification to db_stress (#6173)
Summary:
Currently, db_stress performs verification by calling `VerifyDb()` at the end of test and optionally before tests start. In case of corruption or incorrect result, it will be too late. This PR adds more verification in two ways.
1. For cf consistency test, each test thread takes a snapshot and verifies every N ops. N is configurable via `-verify_db_one_in`. This option is not supported in other stress tests.
2. For cf consistency test, we use another background thread in which a secondary instance periodically tails the primary (interval is configurable). We verify the secondary. Once an error is detected, we terminate the test and report. This does not affect other stress tests.

Test plan (devserver)
```
$./db_stress -test_cf_consistency -verify_db_one_in=0 -ops_per_thread=100000 -continuous_verification_interval=100
$./db_stress -test_cf_consistency -verify_db_one_in=1000 -ops_per_thread=10000 -continuous_verification_interval=0
$make crash_test
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6173

Differential Revision: D19047367

Pulled By: riversand963

fbshipit-source-id: aeed584ad71f9310c111445f34975e5ab47a0615
2019-12-20 08:49:29 -08:00
sdong
7d79b32618 Break db_stress_tool.cc to a list of source files (#6134)
Summary:
db_stress_tool.cc now is a giant file. In order to main it easier to improve and maintain, break it down to multiple source files.
Most classes are turned into their own files. Separate .h and .cc files are created for gflag definiations. Another .h and .cc files are created for some common functions. Some test execution logic that is only loosely related to class StressTest is moved to db_stress_driver.h and db_stress_driver.cc. All the files are located under db_stress_tool/. The directory name is created as such because if we end it with either stress or test, .gitignore will ignore any file under it and makes it prone to issues in developements.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6134

Test Plan: Build under GCC7 with and without LITE on using GNU Make. Build with GCC 4.8. Build with cmake with -DWITH_TOOL=1

Differential Revision: D18876064

fbshipit-source-id: b25d0a7451840f31ac0f5ebb0068785f783fdf7d
2019-12-08 23:51:01 -08:00