- 13 10月, 2015 1 次提交
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由 Islam AbdelRahman 提交于
Summary: Long time ago we add InternalDumpCommand to ldb_tool https://reviews.facebook.net/D11517 This command is using TEST_NewInternalIterator although it's not a test. This patch move TEST_NewInternalIterator outside of db_impl_debug.cc Test Plan: make check make static_lib Reviewers: yhchiang, igor, sdong Reviewed By: sdong Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D48561
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- 10 10月, 2015 1 次提交
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由 Alexey Maykov 提交于
Summary: It would be nice to have and access to table properties in compaction callbacks. In MyRocks project, it will make possible to update optimizer statistics online. Test Plan: ran the unit test. Ran myrocks with the new way of collecting stats. Reviewers: igor, rven, yhchiang Reviewed By: yhchiang Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D48267
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- 09 10月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: Two changes: 1. remove *V2 filter stuff. we deprecated that a while ago 2. clarify what happens when user sets max_subcompactions to bigger than 1 Test Plan: none Reviewers: yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D47871
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- 03 10月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: To support a new MongoDB capability, we need to make sure that we don't do any IO for a short period of time. For background, see: * https://jira.mongodb.org/browse/SERVER-20704 * https://jira.mongodb.org/browse/SERVER-18899 To implement that, I add a new API calls PauseBackgroundWork() and ContinueBackgroundWork() which reuse the capability we already have in place for RefitLevel() function. Test Plan: Added a new test in db_test. Made sure that test fails when PauseBackgroundWork() is commented out. Reviewers: IslamAbdelRahman, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D47901
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- 24 9月, 2015 1 次提交
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由 Islam AbdelRahman 提交于
Summary: This is an initial version of bulk load feature This diff allow us to create sst files, and then bulk load them later, right now the restrictions for loading an sst file are (1) Memtables are empty (2) Added sst files have sequence number = 0, and existing values in database have sequence number = 0 (3) Added sst files values are not overlapping Test Plan: unit testing Reviewers: igor, ott, sdong Reviewed By: sdong Subscribers: leveldb, ott, dhruba Differential Revision: https://reviews.facebook.net/D39081
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- 18 9月, 2015 1 次提交
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由 Andres Noetzli 提交于
Summary: This patch fixes #7460559. It introduces SingleDelete as a new database operation. This operation can be used to delete keys that were never overwritten (no put following another put of the same key). If an overwritten key is single deleted the behavior is undefined. Single deletion of a non-existent key has no effect but multiple consecutive single deletions are not allowed (see limitations). In contrast to the conventional Delete() operation, the deletion entry is removed along with the value when the two are lined up in a compaction. Note: The semantics are similar to @igor's prototype that allowed to have this behavior on the granularity of a column family ( https://reviews.facebook.net/D42093 ). This new patch, however, is more aggressive when it comes to removing tombstones: It removes the SingleDelete together with the value whenever there is no snapshot between them while the older patch only did this when the sequence number of the deletion was older than the earliest snapshot. Most of the complex additions are in the Compaction Iterator, all other changes should be relatively straightforward. The patch also includes basic support for single deletions in db_stress and db_bench. Limitations: - Not compatible with cuckoo hash tables - Single deletions cannot be used in combination with merges and normal deletions on the same key (other keys are not affected by this) - Consecutive single deletions are currently not allowed (and older version of this patch supported this so it could be resurrected if needed) Test Plan: make all check Reviewers: yhchiang, sdong, rven, anthony, yoshinorim, igor Reviewed By: igor Subscribers: maykov, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D43179
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- 03 9月, 2015 1 次提交
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由 Andres Noetzli 提交于
Summary: This diff is a collection of cleanups that were initially part of D43179. Additionally it adds a unified way of defining key-value maps that use a Comparator for sorting (this was previously implemented in four different places). Test Plan: make clean check all Reviewers: rven, anthony, yhchiang, sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D45993
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- 12 8月, 2015 1 次提交
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由 agiardullo 提交于
Summary: Initial implementation of Pessimistic Transactions. This diff contains the api changes discussed in D38913. This diff is pretty large, so let me know if people would prefer to meet up to discuss it. MyRocks folks: please take a look at the API in include/rocksdb/utilities/transaction[_db].h and let me know if you have any issues. Also, you'll notice a couple of TODOs in the implementation of RollbackToSavePoint(). After chatting with Siying, I'm going to send out a separate diff for an alternate implementation of this feature that implements the rollback inside of WriteBatch/WriteBatchWithIndex. We can then decide which route is preferable. Next, I'm planning on doing some perf testing and then integrating this diff into MongoRocks for further testing. Test Plan: Unit tests, db_bench parallel testing. Reviewers: igor, rven, sdong, yhchiang, yoshinorim Reviewed By: sdong Subscribers: hermanlee4, maykov, spetrunia, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D40869
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- 07 8月, 2015 2 次提交
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由 agiardullo 提交于
Summary: Implemented this simple wrapper for something else I was working on. Seemed like it makes sense to expose it instead of burying it in some random code. Test Plan: added test Reviewers: rven, kradhakrishnan, sdong, yhchiang Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D43293
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由 sdong 提交于
Summary: Visual Studio complains about deque<LogWriterNumber> because LogWriterNumber is non-copyable for its unique_ptr member writer. Move away from it, and do explit free. It is less safe but I can't think of a better way to unblock it. Test Plan: valgrind check test Reviewers: anthony, IslamAbdelRahman, kolmike, rven, yhchiang Reviewed By: yhchiang Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D43647
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- 05 8月, 2015 1 次提交
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由 Mike Kolupaev 提交于
Summary: Subj. We really need this feature. Previous diff D40899 has most of the changes to make this possible, this diff just adds the method. Test Plan: `make check`, the new test fails without this diff; ran with ASAN, TSAN and valgrind. Reviewers: igor, rven, IslamAbdelRahman, anthony, kradhakrishnan, tnovak, yhchiang, sdong Reviewed By: sdong Subscribers: MarkCallaghan, maykov, hermanlee4, yoshinorim, tnovak, dhruba Differential Revision: https://reviews.facebook.net/D40905
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- 22 7月, 2015 1 次提交
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由 Mike Kolupaev 提交于
Summary: I'll just copy internal task summary here: " This sequence will cause data loss in the middle after an sync write: non-sync write key 1 flush triggered, not yet scheduled sync write key 2 system crash After rebooting, users might see key 2 but not key 1, which violates the API of sync write. This can be reproduced using unit test FaultInjectionTest::DISABLED_WriteOptionSyncTest. One way to fix it is for a sync write, if there is outstanding unsynced log files, we need to syc them too. " This diff should be considered together with the next diff D40905; in isolation this fix probably could be a little simpler. Test Plan: `make check`; added a test for that (DBTest.SyncingPreviousLogs) before noticing FaultInjectionTest.WriteOptionSyncTest (keeping both since mine asserts a bit more); both tests fail without this diff; for D40905 stacked on top of this diff, ran tests with ASAN, TSAN and valgrind Reviewers: rven, yhchiang, IslamAbdelRahman, anthony, kradhakrishnan, igor, sdong Reviewed By: sdong Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D40899
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- 18 7月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: When we first started, max_background_flushes was 0 by default and compaction thread was executing flushes (since there was no flush thread). Then, we switched the default max_background_flushes to 1. However, we still support the case where there is no flush thread and flushes are done in compaction. This is making our code a bit more complicated. By not supporting this use-case we can make our code simpler. We have a special case that when you set max_background_flushes to 0, we schedule the flush to execute on the compaction thread. Test Plan: make check (there might be some unit tests that depend on this behavior) Reviewers: IslamAbdelRahman, yhchiang, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D41931
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- 14 7月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: In one of our recent meetings, we discussed deprecating features that are not being actively used. One of those features, at least within Facebook, is timeout_hint. The feature is really nicely implemented, but if nobody needs it, we should remove it from our code-base (until we get a valid use-case). Some arguments: * Less code == better icache hit rate, smaller builds, simpler code * The motivation for adding timeout_hint_us was to work-around RocksDB's stall issue. However, we're currently addressing the stall issue itself (see @sdong's recent work on stall write_rate), so we should never see sharp lock-ups in the future. * Nobody is using the feature within Facebook's code-base. Googling for `timeout_hint_us` also doesn't yield any users. Test Plan: make check Reviewers: anthony, kradhakrishnan, sdong, yhchiang Reviewed By: yhchiang Subscribers: sdong, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D41937
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- 12 7月, 2015 1 次提交
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由 sdong 提交于
Summary: Public API depends on port/port.h which is wrong. Fix it. Also with gcc 4.8.1 build was broken as MAX_INT32 was not recognized. Fix it by using ::max in linux. Test Plan: Build it and try to build an external project on top of it. Reviewers: anthony, yhchiang, kradhakrishnan, igor Reviewed By: igor Subscribers: yoshinorim, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D41745
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- 03 7月, 2015 1 次提交
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由 Mike Kolupaev 提交于
Summary: This fixes the following scenario we've hit: - we reached max_total_wal_size, created a new wal and scheduled flushing all memtables corresponding to the old one, - before the last of these flushes started its column family was dropped; the last background flush call was a no-op; no one removed the old wal from alive_logs_, - hours have passed and no flushes happened even though lots of data was written; data is written to different column families, compactions are disabled; old column families are dropped before memtable grows big enough to trigger a flush; the old wal still sits in alive_logs_ preventing max_total_wal_size limit from kicking in, - a few more hours pass and we run out disk space because of one huge .log file. Test Plan: `make check`; backported the new test, checked that it fails without this diff Reviewers: igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D40893
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- 02 7月, 2015 1 次提交
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由 Dmitri Smirnov 提交于
Summary: Make RocksDb build and run on Windows to be functionally complete and performant. All existing test cases run with no regressions. Performance numbers are in the pull-request. Test plan: make all of the existing unit tests pass, obtain perf numbers. Co-authored-by: Praveen Rao praveensinghrao@outlook.com Co-authored-by: Sherlock Huang baihan.huang@gmail.com Co-authored-by: Alex Zinoviev alexander.zinoviev@me.com Co-authored-by: Dmitri Smirnov dmitrism@microsoft.com
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- 18 6月, 2015 2 次提交
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由 Islam AbdelRahman 提交于
Summary: This diff update DB::CompactRange to use RangeCompactionOptions instead of using multiple parameters Old CompactRange is still available but deprecated Test Plan: make all check make rocksdbjava USE_CLANG=1 make all OPT=-DROCKSDB_LITE make release Reviewers: sdong, yhchiang, igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D40209
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由 Igor Canadi 提交于
Summary: We go to great lengths to make sure MaybeScheduleFlushOrCompaction() is called outside of write thread. But anyway, it's still called in the mutex, so it's not that much cheaper. This diff removes the "optimization" and cleans up the code a bit. Test Plan: make check Reviewers: rven, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D40113
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- 17 6月, 2015 1 次提交
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由 sdong 提交于
Summary: Add an option in GetApproximateSize() so that the result will include estimated sizes in mem tables. To implement it, implement an estimated count from the beginning to a key in skip list. The approach is to count to find the entry, how many Next() is issued from each level, and sum them with a weight that is <branching factor> ^ <level>. Test Plan: Add a test case Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D40119
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- 12 6月, 2015 2 次提交
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由 sdong 提交于
Summary: We slow down data into the database to the rate of options.delayed_write_rate (a new option) with this patch. The thread synchronization approach I take is to still synchronize write controller by DB mutex and GetDelay() is inside DB mutex. Try to minimize the frequency of getting time in GetDelay(). I verified it through db_bench and it seems to work hard_rate_limit is deprecated. options.delayed_write_rate is still not dynamically changeable. Need to work on it as a follow-up. Test Plan: Add new unit tests in db_test Reviewers: yhchiang, rven, kradhakrishnan, anthony, MarkCallaghan, igor Reviewed By: igor Subscribers: ikabiljo, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D36351
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由 Islam AbdelRahman 提交于
Summary: Adding largest sequence number to FlushJobInfo and passing flushed file metadata to NotifyOnFlushCompleted which include alot of other values that we may want to expose in FlushJobInfo Test Plan: make check Reviewers: igor, sdong Reviewed By: sdong Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D39927
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- 06 6月, 2015 1 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: EventListener::OnFlushCompleted() now passes a structure instead of a list of parameters. This minimizes the API change in the future. Test Plan: listener_test compact_files_test example/compact_files_example Reviewers: kradhakrishnan, sdong, IslamAbdelRahman, rven, igor Reviewed By: rven, igor Subscribers: IslamAbdelRahman, rven, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D39543
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- 05 6月, 2015 1 次提交
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由 Islam AbdelRahman 提交于
Summary: This diff updates the logic of how we do trivial move, now trivial move can run on any number of files in input level as long as they are not overlapping The conditions for trivial move have been updated Introduced conditions: - Trivial move cannot happen if we have a compaction filter (except if the compaction is not manual) - Input level files cannot be overlapping Removed conditions: - Trivial move only run when the compaction is not manual - Input level should can contain only 1 file More context on what tests failed because of Trivial move ``` DBTest.CompactionsGenerateMultipleFiles This test is expecting compaction on a file in L0 to generate multiple files in L1, this test will fail with trivial move because we end up with one file in L1 ``` ``` DBTest.NoSpaceCompactRange This test expect compaction to fail when we force environment to report running out of space, of course this is not valid in trivial move situation because trivial move does not need any extra space, and did not check for that ``` ``` DBTest.DropWrites Similar to DBTest.NoSpaceCompactRange ``` ``` DBTest.DeleteObsoleteFilesPendingOutputs This test expect that a file in L2 is deleted after it's moved to L3, this is not valid with trivial move because although the file was moved it is now used by L3 ``` ``` CuckooTableDBTest.CompactionIntoMultipleFiles Same as DBTest.CompactionsGenerateMultipleFiles ``` This diff is based on a work by @sdong https://reviews.facebook.net/D34149 Test Plan: make -j64 check Reviewers: rven, sdong, igor Reviewed By: igor Subscribers: yhchiang, ott, march, dhruba, sdong Differential Revision: https://reviews.facebook.net/D34797
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- 03 6月, 2015 3 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: Fix the following compile warning in db/db_impl db/db_impl.cc:1603:19: error: implicit conversion loses integer precision: 'const uint64_t' (aka 'const unsigned long') to 'int' [-Werror,-Wshorten-64-to-32] info.job_id = job_id; ~ ^~~~~~ Test Plan: db_test Reviewers: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D39423
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由 Yueh-Hsuan Chiang 提交于
Summary: Allow EventListener::OnCompactionCompleted to return CompactionJobStats, which contains useful information about a compaction. Example CompactionJobStats returned by OnCompactionCompleted(): smallest_output_key_prefix 05000000 largest_output_key_prefix 06990000 elapsed_time 42419 num_input_records 300 num_input_files 3 num_input_files_at_output_level 2 num_output_records 200 num_output_files 1 actual_bytes_input 167200 actual_bytes_output 110688 total_input_raw_key_bytes 5400 total_input_raw_value_bytes 300000 num_records_replaced 100 is_manual_compaction 1 Test Plan: Developed a mega test in db_test which covers 20 variables in CompactionJobStats. Reviewers: rven, igor, anthony, sdong Reviewed By: sdong Subscribers: tnovak, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D38463
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由 Yueh-Hsuan Chiang 提交于
Summary: Add EventListener::OnTableFileCreated(), which will be called when a table file is created. This patch is part of the EventLogger and EventListener integration. Test Plan: Augment existing test in db/listener_test.cc Reviewers: anthony, kradhakrishnan, rven, igor, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D38865
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- 02 6月, 2015 2 次提交
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由 sdong 提交于
Summary: In DB::CompactRange(), change parameter "reduce_level" to "change_level". Users can compact all data to the last level if needed. By doing it, users can migrate the DB to options.level_compaction_dynamic_level_bytes=true. Test Plan: Add a unit test for it. Reviewers: yhchiang, anthony, kradhakrishnan, igor, rven Reviewed By: rven Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D39099
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由 Yueh-Hsuan Chiang 提交于
Summary: DBImpl::notifying_events_ is a internal counter in DBImpl which is used to prevent DB close when DB is notifying events. However, as the current events all rely on either compaction or flush which already have similar counters to prevent DB close, it is safe to remove notifying_events_. Test Plan: listener_test examples/compact_files_example Reviewers: igor, anthony, kradhakrishnan, rven, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D39315
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- 30 5月, 2015 1 次提交
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由 agiardullo 提交于
Summary: Optimistic transactions supporting begin/commit/rollback semantics. Currently relies on checking the memtable to determine if there are any collisions at commit time. Not yet implemented would be a way of enuring the memtable has some minimum amount of history so that we won't fail to commit when the memtable is empty. You should probably start with transaction.h to get an overview of what is currently supported. Test Plan: Added a new test, but still need to look into stress testing. Reviewers: yhchiang, igor, rven, sdong Reviewed By: sdong Subscribers: adamretter, MarkCallaghan, leveldb, dhruba Differential Revision: https://reviews.facebook.net/D33435
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- 27 5月, 2015 1 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: Removed an unused private variable in db_impl.h Test Plan: make db_test Reviewers: sdong, anthony, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D38925
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- 22 5月, 2015 1 次提交
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由 Yueh-Hsuan Chiang 提交于
Summary: Make DB::GetDbIdentity() be const function. Test Plan: make db_test Reviewers: igor, rven, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D38745
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- 12 5月, 2015 1 次提交
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由 agiardullo 提交于
Summary: Added a couple functions to WriteBatchWithIndex to make it easier to query the value of a key including reading pending writes from a batch. (This is needed for transactions). I created write_batch_with_index_internal.h to use to store an internal-only helper function since there wasn't a good place in the existing class hierarchy to store this function (and it didn't seem right to stick this function inside WriteBatchInternal::Rep). Since I needed to access the WriteBatchEntryComparator, I moved some helper classes from write_batch_with_index.cc into write_batch_with_index_internal.h/.cc. WriteBatchIndexEntry, ReadableWriteBatch, and WriteBatchEntryComparator are all unchanged (just moved to a different file(s)). Test Plan: Added new unit tests. Reviewers: rven, yhchiang, sdong, igor Reviewed By: igor Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D38037
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- 06 5月, 2015 1 次提交
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由 Laurent Demailly 提交于
Summary: fix crashes in stats and compaction filter for db_ttl_impl Test Plan: Ran build with lots of debugging https://reviews.facebook.net/differential/diff/194175/ Reviewers: yhchiang, igor, rven Reviewed By: igor Subscribers: rven, dhruba Differential Revision: https://reviews.facebook.net/D38001
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- 28 4月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: Added these events: * Recovery start, finish and also when recovery creates a file * Trivial move * Compaction start, finish and when compaction creates a file * Flush start, finish Also includes small fix to EventLogger Also added option ROCKSDB_PRINT_EVENTS_TO_STDOUT which is useful when we debug things. I've spent far too much time chasing LOG files. Still didn't get sst table properties in JSON. They are written very deeply into the stack. I'll address in separate diff. TODO: * Write specification. Let's first use this for a while and figure out what's good data to put here, too. After that we'll write spec * Write tools that parse and analyze LOGs. This can be in python or go. Good intern task. Test Plan: Ran db_bench with ROCKSDB_PRINT_EVENTS_TO_STDOUT. Here's the output: https://phabricator.fb.com/P19811976 Reviewers: sdong, yhchiang, rven, MarkCallaghan, kradhakrishnan, anthony Reviewed By: anthony Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D37521
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- 24 4月, 2015 1 次提交
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由 Giuseppe Ottaviano 提交于
Summary: This diff implements a new `DB` method `PromoteL0` which moves all files in L0 to a given level skipping compaction, provided that the files have disjoint ranges and all levels up to the target level are empty. This method provides finer-grain control for trivial compactions, and it is useful for bulk-loading pre-sorted keys. Compared to D34797, it does not change the semantics of an existing operation, which can impact existing code. PromoteL0 is designed to work well in combination with the proposed `GetSstFileWriter`/`AddFile` interface, enabling to "design" the level structure by populating one level at a time. Such fine-grained control can be very useful for static or mostly-static databases. Test Plan: `make check` Reviewers: IslamAbdelRahman, philipp, MarkCallaghan, yhchiang, igor, sdong Reviewed By: sdong Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D37107
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- 18 4月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: Some Mongo+Rocks datasets in Parse's environment are not doing compactions very frequently. During the quiet period (with no IO), we'd like to schedule compactions so that our reads become faster. Also, aggressively compacting during quiet periods helps when write bursts happen. In addition, we also want to compact files that are containing deleted key ranges (like old oplog keys). All of this is currently not possible with CompactRange() because it's single-threaded and blocks all other compactions from happening. Running CompactRange() risks an issue of blocking writes because we generate too much Level 0 files before the compaction is over. Stopping writes is very dangerous because they hold transaction locks. We tried running manual compaction once on Mongo+Rocks and everything fell apart. MarkForCompaction() solves all of those problems. This is very light-weight manual compaction. It is lower priority than automatic compactions, which means it shouldn't interfere with background process keeping the LSM tree clean. However, if no automatic compactions need to be run (or we have extra background threads available), we will start compacting files that are marked for compaction. Test Plan: added a new unit test Reviewers: yhchiang, rven, MarkCallaghan, sdong Reviewed By: sdong Subscribers: yoshinorim, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D37083
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- 31 3月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: Cleaning up log files can do heavy IO, since we call ftruncate() in the destructor. We don't want to call ftruncate() in user threads. This diff moves cleaning to background threads (flush and compaction) Test Plan: make check, will also run valgrind Reviewers: yhchiang, rven, MarkCallaghan, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D36177
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- 17 3月, 2015 1 次提交
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由 Venkatesh Radhakrishnan 提交于
Summary: Some suggestions for cleanup from Igor. Test Plan: Regression tests. Reviewers: igor Reviewed By: igor Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D35169
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- 14 3月, 2015 1 次提交
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由 Igor Canadi 提交于
Summary: Here's my proposal for making our LOGs easier to read by machines. The idea is to dump all events as JSON objects. JSON is easy to read by humans, but more importantly, it's easy to read by machines. That way, we can parse this, load into SQLite/mongo and then query or visualize. I started with table_create and table_delete events, but if everybody agrees, I'll continue by adding more events (flush/compaction/etc etc) Test Plan: Ran db_bench. Observed: 2015/01/15-14:13:25.788019 1105ef000 EVENT_LOG_v1 {"time_micros": 1421360005788015, "event": "table_file_creation", "file_number": 12, "file_size": 1909699} 2015/01/15-14:13:25.956500 110740000 EVENT_LOG_v1 {"time_micros": 1421360005956498, "event": "table_file_deletion", "file_number": 12} Reviewers: yhchiang, rven, dhruba, MarkCallaghan, lgalanis, sdong Reviewed By: sdong Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D31647
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