- 24 12月, 2014 1 次提交
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由 Yueh-Hsuan Chiang 提交于
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- 23 12月, 2014 1 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: GetThreadList() feature depends on the thread creation and destruction, which is currently handled under Env. This patch moves GetThreadList() feature under Env to better manage the dependency of GetThreadList() feature on thread creation and destruction. Renamed ThreadStatusImpl to ThreadStatusUpdater. Add ThreadStatusUtil, which is a static class contains utility functions for ThreadStatusUpdater. Test Plan: run db_test, thread_list_test and db_bench and verify the life cycle of Env and ThreadStatusUpdater is properly managed. Reviewers: igor, sdong Reviewed By: sdong Subscribers: ljin, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30057
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- 22 12月, 2014 2 次提交
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由 Igor Canadi 提交于
Summary: As title. We shouldn't need to execute flush from compaction if there are dedicated threads doing flushes. Test Plan: make check Reviewers: rven, yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30579
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由 Igor Canadi 提交于
Summary: There are two versions of FindObsoleteFiles(): * full scan, which is executed every 6 hours (and it's terribly slow) * no full scan, which is executed every time a background process finishes and iterator is deleted This diff is optimizing the second case (no full scan). Here's what we do before the diff: * Get the list of obsolete files (files with ref==0). Some files in obsolete_files set might actually be live. * Get the list of live files to avoid deleting files that are live. * Delete files that are in obsolete_files and not in live_files. After this diff: * The only files with ref==0 that are still live are files that have been part of move compaction. Don't include moved files in obsolete_files. * Get the list of obsolete files (which exclude moved files). * No need to get the list of live files, since all files in obsolete_files need to be deleted. I'll post the benchmark results, but you can get the feel of it here: https://reviews.facebook.net/D30123 This depends on D30123. P.S. We should do full scan only in failure scenarios, not every 6 hours. I'll do this in a follow-up diff. Test Plan: One new unit test. Made sure that unit test fails if we don't have a `if (!f->moved)` safeguard in ~Version. make check Big number of compactions and flushes: ./db_stress --threads=30 --ops_per_thread=20000000 --max_key=10000 --column_families=20 --clear_column_family_one_in=10000000 --verify_before_write=0 --reopen=15 --max_background_compactions=10 --max_background_flushes=10 --db=/fast-rocksdb-tmp/db_stress --prefixpercent=0 --iterpercent=0 --writepercent=75 --db_write_buffer_size=2000000 Reviewers: yhchiang, rven, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30249
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- 21 12月, 2014 1 次提交
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由 Igor Canadi 提交于
Summary: This one wasn't easy to find :) What happens is we go through all cfds on flush_queue_ and find no cfds to flush, *but* the cfd is set to the last CF we looped through and following code assumes we want it flushed. BTW @sdong do you think we should also make BackgroundFlush() only check a single cfd for flushing instead of doing this `while (!flush_queue_.empty())`? Test Plan: regression test no longer fails Reviewers: sdong, rven, yhchiang Reviewed By: yhchiang Subscribers: sdong, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30591
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- 20 12月, 2014 1 次提交
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由 Igor Canadi 提交于
Summary: When scaling to higher number of column families, the worst bottleneck was MaybeScheduleFlushOrCompaction(), which did a for loop over all column families while holding a mutex. This patch addresses the issue. The approach is similar to our earlier efforts: instead of a pull-model, where we do something for every column family, we can do a push-based model -- when we detect that column family is ready to be flushed/compacted, we add it to the flush_queue_/compaction_queue_. That way we don't need to loop over every column family in MaybeScheduleFlushOrCompaction. Here are the performance results: Command: ./db_bench --write_buffer_size=268435456 --db_write_buffer_size=268435456 --db=/fast-rocksdb-tmp/rocks_lots_of_cf --use_existing_db=0 --open_files=55000 --statistics=1 --histogram=1 --disable_data_sync=1 --max_write_buffer_number=2 --sync=0 --benchmarks=fillrandom --threads=16 --num_column_families=5000 --disable_wal=1 --max_background_flushes=16 --max_background_compactions=16 --level0_file_num_compaction_trigger=2 --level0_slowdown_writes_trigger=2 --level0_stop_writes_trigger=3 --hard_rate_limit=1 --num=33333333 --writes=33333333 Before the patch: fillrandom : 26.950 micros/op 37105 ops/sec; 4.1 MB/s After the patch: fillrandom : 17.404 micros/op 57456 ops/sec; 6.4 MB/s Next bottleneck is VersionSet::AddLiveFiles, which is painfully slow when we have a lot of files. This is coming in the next patch, but when I removed that code, here's what I got: fillrandom : 7.590 micros/op 131758 ops/sec; 14.6 MB/s Test Plan: make check two stress tests: Big number of compactions and flushes: ./db_stress --threads=30 --ops_per_thread=20000000 --max_key=10000 --column_families=20 --clear_column_family_one_in=10000000 --verify_before_write=0 --reopen=15 --max_background_compactions=10 --max_background_flushes=10 --db=/fast-rocksdb-tmp/db_stress --prefixpercent=0 --iterpercent=0 --writepercent=75 --db_write_buffer_size=2000000 max_background_flushes=0, to verify that this case also works correctly ./db_stress --threads=30 --ops_per_thread=2000000 --max_key=10000 --column_families=20 --clear_column_family_one_in=10000000 --verify_before_write=0 --reopen=3 --max_background_compactions=3 --max_background_flushes=0 --db=/fast-rocksdb-tmp/db_stress --prefixpercent=0 --iterpercent=0 --writepercent=75 --db_write_buffer_size=2000000 Reviewers: ljin, rven, yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30123
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- 17 12月, 2014 2 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: Avoid unnecessary unlock and lock mutex when notifying events. Test Plan: ./listener_test Reviewers: igor Reviewed By: igor Subscribers: sdong, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30267
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由 Venkatesh Radhakrishnan 提交于
Summary: We now release the mutex before copying the files in the case of the trivial move. This path does not use the compaction job. Test Plan: DBTest.LevelCompactionThirdPath Reviewers: yhchiang, igor, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30381
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- 16 12月, 2014 1 次提交
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由 Venkatesh Radhakrishnan 提交于
Summary: Allow Level-style compaction to place files in different paths This diff provides the code for task 4854591. We now support level-compaction to place files in different paths by specifying them in db_paths along with the minimum level for files to store in that path. Test Plan: ManualLevelCompactionOutputPathId in db_test.cc Reviewers: yhchiang, MarkCallaghan, dhruba, yoshinorim, sdong Reviewed By: sdong Subscribers: yoshinorim, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D29799
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- 12 12月, 2014 1 次提交
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由 sdong 提交于
Summary: Now DB::GetSnapshot() doesn't scale to more column families, as it needs to go through all the column families to find whether snapshot is supported. This patch optimizes it. Test Plan: Add unit tests to cover negative cases. make all check Reviewers: yhchiang, rven, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D30093
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- 09 12月, 2014 1 次提交
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由 sdong 提交于
Summary: This is a regression bug introduced by https://reviews.facebook.net/D24729 . max_total_wal_size would be off the target it should be more and more in the case that the a user holds the current super version after flush or compaction. This patch fixes it Test Plan: make all check Reviewers: yhchiang, rven, igor Reviewed By: igor Subscribers: ljin, yoshinorim, MarkCallaghan, hermanlee4, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D29961
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- 06 12月, 2014 1 次提交
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由 sdong 提交于
Summary: Add a counter in SnapshotList to show number of snapshots. Also a unix timestamp in every snapshot. Add two DB Properties to return number of snapshots and timestamp of the oldest one. Test Plan: Add unit test checking Reviewers: yhchiang, rven, igor Reviewed By: igor Subscribers: leveldb, dhruba, MarkCallaghan Differential Revision: https://reviews.facebook.net/D29919
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- 04 12月, 2014 1 次提交
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由 Mark Callaghan 提交于
Summary: Adds counter for bytes moved (files pushed down a level rather than compacted) to compaction IO stats as Moved(GB). From the output removed these infrequently used columns: RW-Amp, Rn(cnt), Rnp1(cnt), Wnp1(cnt), Wnew(cnt). Example old output: Level Files Size(MB) Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) RW-Amp W-Amp Rd(MB/s) Wr(MB/s) Rn(cnt) Rnp1(cnt) Wnp1(cnt) Wnew(cnt) Comp(sec) Comp(cnt) Avg(sec) Stall(sec) Stall(cnt) Avg(ms) RecordIn RecordDrop ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ L0 0/0 0 0.0 0.0 0.0 0.0 2130.8 2130.8 0.0 0.0 0.0 109.1 0 0 0 0 20002 25068 0.798 28.75 182059 0.16 0 0 L1 142/0 509 1.0 4618.5 2036.5 2582.0 4602.1 2020.2 4.5 2.3 88.5 88.1 24220 701246 1215528 514282 53466 4229 12.643 0.00 0 0.002032745988 300688729 Example new output: Level Files Size(MB) Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) Comp(cnt) Avg(sec) Stall(sec) Stall(cnt) Avg(ms) RecordIn RecordDrop -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- L0 7/0 13 1.8 0.0 0.0 0.0 0.6 0.6 0.0 0.0 0.0 14.7 44 353 0.124 0.03 626 0.05 0 0 L1 9/0 16 1.6 0.0 0.0 0.0 0.0 0.0 0.6 0.0 0.0 0.0 0 0 0.000 0.00 0 0.00 0 0 Task ID: # Blame Rev: Test Plan: make check, run db_bench --fillseq --stats_per_interval --stats_interval and look at output Revert Plan: Database Impact: Memcache Impact: Other Notes: EImportant: - begin *PUBLIC* platform impact section - Bugzilla: # - end platform impact - Reviewers: igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D29787
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- 03 12月, 2014 1 次提交
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由 Jonah Cohen 提交于
Summary: Introduces a new class for managing write buffer memory across column families. We supplement ColumnFamilyOptions::write_buffer_size with ColumnFamilyOptions::write_buffer, a shared pointer to a WriteBuffer instance that enforces memory limits before flushing out to disk. Test Plan: Added SharedWriteBuffer unit test to db_test.cc Reviewers: sdong, rven, ljin, igor Reviewed By: igor Subscribers: tnovak, yhchiang, dhruba, xjin, MarkCallaghan, yoshinorim Differential Revision: https://reviews.facebook.net/D22581
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- 25 11月, 2014 1 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: In some environment such as android, the c++ library does not have std::to_string. This path adds rocksdb::ToString(), which wraps std::to_string when std::to_string is not available, and implements std::to_string in the other case. Test Plan: make dbg -j32 ./db_test make clean make dbg OPT=-DOS_ANDROID -j32 ./db_test Reviewers: ljin, sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D29181
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- 22 11月, 2014 1 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: An entry of ConstantColumnFamilyInfo is created when: 1. DB::Open 2. CreateColumnFamily. However, there are cases that DB::Open could also call CreateColumnFamily when create_missing_column_families=true. As a result, it will create duplicate ConstantColumnFamilyInfo and one of them would be leaked. Test Plan: ./deletefile_test Reviewers: igor, sdong, ljin Reviewed By: ljin Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D29307
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- 21 11月, 2014 2 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: Add enable_thread_tracking to DBOptions to allow tracking thread status related to the DB. Default is off. Test Plan: export ROCKSDB_TESTS=ThreadList ./db_test Reviewers: ljin, sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D29289
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由 Yueh-Hsuan Chiang 提交于
Summary: Add GetThreadList API, which allows developer to track the status of each process. Currently, calling GetThreadList will only get the list of background threads in RocksDB with their thread-id and thread-type (priority) set. Will add more support on this in the later diffs. ThreadStatus currently has the following properties: // An unique ID for the thread. const uint64_t thread_id; // The type of the thread, it could be ROCKSDB_HIGH_PRIORITY, // ROCKSDB_LOW_PRIORITY, and USER_THREAD const ThreadType thread_type; // The name of the DB instance where the thread is currently // involved with. It would be set to empty string if the thread // does not involve in any DB operation. const std::string db_name; // The name of the column family where the thread is currently // It would be set to empty string if the thread does not involve // in any column family. const std::string cf_name; // The event that the current thread is involved. // It would be set to empty string if the information about event // is not currently available. Test Plan: ./thread_list_test export ROCKSDB_TESTS=GetThreadList ./db_test Reviewers: rven, igor, sdong, ljin Reviewed By: ljin Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D25047
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- 19 11月, 2014 1 次提交
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由 Lei Jin 提交于
Summary: We should not reference cfd->options() directly! Test Plan: make release Reviewers: sdong, rven, igor, yhchiang Reviewed By: igor, yhchiang Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D29061
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- 15 11月, 2014 2 次提交
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由 Igor Canadi 提交于
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由 Igor Canadi 提交于
Summary: This way we can gurantee that old MemTables get destructed before DBImpl gets destructed, which might be useful if we want to make them depend on state from DBImpl. Test Plan: make check with asserts in JobContext's destructor Reviewers: ljin, sdong, yhchiang, rven, jonahcohen Reviewed By: jonahcohen Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28959
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- 14 11月, 2014 4 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: As a short-term fix, let's go back to previous way of calculating NeedsCompaction(). SIGSEGV happens because NeedsCompaction() can happen before super_version (and thus MutableCFOptions) is initialized. Test Plan: make check Reviewers: ljin, sdong, rven, yhchiang Reviewed By: yhchiang Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28875
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由 Igor Canadi 提交于
Summary: It adds lots of code. Test Plan: compile for iOS, compile for mac. works. Reviewers: rven, sdong, ljin, yhchiang Reviewed By: yhchiang Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28857
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由 Yueh-Hsuan Chiang 提交于
Summary: Move NeedsCompaction() from VersionStorageInfo to CompactionPicker to allow different compaction strategy to have their own way to determine whether doing compaction is necessary. When compaction style is set to kCompactionStyleNone, then NeedsCompaction() will always return false. Test Plan: export ROCKSDB_TESTS=Compact ./db_test Reviewers: ljin, sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28719
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由 Igor Canadi 提交于
Summary: So iOS size_t is 32-bit, so we need to static_cast<size_t> any uint64_t :( Test Plan: TARGET_OS=IOS make static_lib Reviewers: dhruba, ljin, yhchiang, rven, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28743
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- 12 11月, 2014 1 次提交
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由 Igor Canadi 提交于
Summary: We need to turn on -Wshorten-64-to-32 for mobile. See D1671432 (internal phabricator) for details. This diff turns on the warning flag and fixes all the errors. There were also some interesting errors that I might call bugs, especially in plain table. Going forward, I think it makes sense to have this flag turned on and be very very careful when converting 64-bit to 32-bit variables. Test Plan: compiles Reviewers: ljin, rven, yhchiang, sdong Reviewed By: yhchiang Subscribers: bobbaldwin, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28689
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- 11 11月, 2014 2 次提交
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由 Igor Canadi 提交于
Summary: I mistakenly changed the behavior to ++next_file_number_ instead of next_file_number_++, as it should have been: https://github.com/facebook/rocksdb/blob/344edbb044ff5c08a43e4a6e9344c5c861552c0e/db/version_set.h#L539 Test Plan: none. not sure if this would break anything. It's just different behavior, so I'd rather not risk Reviewers: ljin, rven, yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28557
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由 Igor Canadi 提交于
Summary: Based on @ljin feedback Test Plan: compiles Reviewers: ljin, yhchiang, sdong Reviewed By: sdong Subscribers: ljin, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28515
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- 08 11月, 2014 4 次提交
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由 Igor Canadi 提交于
Summary: Based on @sdong's feedback in the diff, we shouldn't keep db_mutex in CompactionJob's state. This diff removes db_mutex from CompactionJob state, by making next_file_number_ atomic. That way we only need to pass the lock to InstallCompactionResults() because of LogAndApply() Test Plan: make check Reviewers: ljin, yhchiang, rven, sdong Reviewed By: sdong Subscribers: sdong, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28491
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由 Yueh-Hsuan Chiang 提交于
Summary: Fixed compile error in db/db_impl.cc Test Plan: make
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由 Yueh-Hsuan Chiang 提交于
Summary: This diff adds three sets of APIs to RocksDB. = GetColumnFamilyMetaData = * This APIs allow users to obtain the current state of a RocksDB instance on one column family. * See GetColumnFamilyMetaData in include/rocksdb/db.h = EventListener = * A virtual class that allows users to implement a set of call-back functions which will be called when specific events of a RocksDB instance happens. * To register EventListener, simply insert an EventListener to ColumnFamilyOptions::listeners = CompactFiles = * CompactFiles API inputs a set of file numbers and an output level, and RocksDB will try to compact those files into the specified level. = Example = * Example code can be found in example/compact_files_example.cc, which implements a simple external compactor using EventListener, GetColumnFamilyMetaData, and CompactFiles API. Test Plan: listener_test compactor_test example/compact_files_example export ROCKSDB_TESTS=CompactFiles db_test export ROCKSDB_TESTS=MetaData db_test Reviewers: ljin, igor, rven, sdong Reviewed By: sdong Subscribers: MarkCallaghan, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D24705
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由 Igor Canadi 提交于
Summary: Here's a prototype of redesigning pending_outputs_. This way, we don't have to expose pending_outputs_ to other classes (CompactionJob, FlushJob, MemtableList). DBImpl takes care of it. Still have to write some comments, but should be good enough to start the discussion. Test Plan: make check, will also run stress test Reviewers: ljin, sdong, rven, yhchiang Reviewed By: yhchiang Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28353
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- 05 11月, 2014 4 次提交
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由 Lei Jin 提交于
Summary: as title Test Plan: ./db_test Reviewers: sdong, yhchiang, rven, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28269
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由 Lei Jin 提交于
Summary: as title Test Plan: ran it Reviewers: yhchiang, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D28311
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由 Yueh-Hsuan Chiang 提交于
Summary: Apply InfoLogLevel to the logs in db/db_impl.cc Test Plan: db_test db_bench Reviewers: ljin, sdong, igor Reviewed By: igor Subscribers: leveldb, MarkCallaghan, dhruba Differential Revision: https://reviews.facebook.net/D28233
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由 sdong 提交于
Summary: Enforce the accessier naming convention in functions in version_set.h Test Plan: make all check Reviewers: ljin, yhchiang, rven, igor Reviewed By: igor Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D28143
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- 04 11月, 2014 1 次提交
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由 sdong 提交于
DB::Open() to automatically increase thread pool size if it is smaller than max number of parallel compactions or flushes Summary: With the patch, thread pool size will be automatically increased if DB's options ask for more parallelism of compactions or flushes. Too many users have been confused by the API. Change it to make it harder for users to make mistakes Test Plan: Add two unit tests to cover the function. Reviewers: yhchiang, rven, igor, MarkCallaghan, ljin Reviewed By: ljin Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D27555
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- 01 11月, 2014 3 次提交
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由 Igor Canadi 提交于
Summary: Long awaited CompactionJob class! Move most compaction-related things from DBImpl to CompactionJob, making CompactionJob easier to test and understand. Currently this is just replicating exactly the same functionality with as little as change as possible. As future work, we should: 1. Add CompactionJob tests (I think I'll do that tomorrow) 2. Reduce CompactionJob's state that it inherits from DBImpl 3. Figure out how to do yielding to flush better. Currently I implemented a callback as we agreed yesterday, but I don't think it's a good long term solution. This reduces db_impl.cc from 5000+ LOC to 3400! Test Plan: make check, will add CompactionJob-specific tests, probably also move some tests from db_test to compaction_job_test Reviewers: rven, yhchiang, sdong, ljin Reviewed By: ljin Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D27957
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由 Igor Canadi 提交于
Summary: ...and fix all the errors :) Jim suggested turning on -Wshadow because it helped him fix number of critical bugs in fbcode. I think it's a good idea to be -Wshadow clean. Test Plan: compiles Reviewers: yhchiang, rven, sdong, ljin Reviewed By: ljin Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D27711
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由 sdong 提交于
Summary: Rename Version::Builder to VersionBuilder and expose its definition to a header. Make VerisonBuilder not reference Version or ColumnFamilyData, only working with VersionStorageInfo. Add version_builder_test which has a simple test. Test Plan: make all check Reviewers: rven, yhchiang, igor, ljin Reviewed By: igor Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D27969
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