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Igor Canadi 7413306d94 Take a chance on a random file when choosing compaction 
Summary:
When trying to compact entire database with SuggestCompactRange(), we'll first try the left-most files. This is pretty bad, because:
1) the left part of LSM tree will be overly compacted, but right part will not be touched
2) First compaction will pick up the left-most file. Second compaction will try to pick up next left-most, but this will not be possible, because there's a big chance that second's file range on N+1 level is already being compacted.

I observe both of those problems when running Mongo+RocksDB and trying to compact the DB to clean up tombstones. I'm unable to clean them up :(

This diff adds a bit of randomness into choosing a file. First, it chooses a file at random and tries to compact that one. This should solve both problems specified here.

Test Plan: make check

Reviewers: yhchiang, rven, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D38379
2015-05-15 14:14:40 -07:00
..
builder.cc Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
builder.h Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
c.cc Deprecate removeScanCountLimit in NewLRUCache 2015-03-17 15:04:37 -07:00
c_test.c rocksdb: Fixed 'Dead assignment' and 'Dead initialization' scan-build warnings 2015-02-23 14:10:09 -08:00
column_family.cc Fixed compile error in db/column_family.cc 2015-05-12 16:20:03 -07:00
column_family.h Fix CompactRange for universal compaction with num_levels > 1 2015-04-23 19:12:31 -07:00
column_family_test.cc Fix flakiness in column_family_test 2015-05-05 15:59:02 -07:00
compact_files_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
compaction.cc Universal Compaction with multiple levels won't allocate up to output size 2015-05-13 14:15:46 -07:00
compaction.h Cleanup CompactionJob 2015-05-05 19:01:12 -07:00
compaction_job.cc Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
compaction_job.h Allow GetThreadList() to report basic compaction operation properties. 2015-05-06 22:51:06 -07:00
compaction_job_test.cc Cleanup CompactionJob 2015-05-05 19:01:12 -07:00
compaction_picker.cc Take a chance on a random file when choosing compaction 2015-05-15 14:14:40 -07:00
compaction_picker.h Optimize GetRange Function 2015-05-05 09:57:47 -07:00
compaction_picker_test.cc Reset parent_index and base_index when picking files marked for compaction 2015-05-12 11:16:25 -07:00
comparator_db_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
corruption_test.cc fix typos 2015-04-25 18:14:27 +09:00
cuckoo_table_db_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
db_bench.cc db_bench to support rate limiter 2015-05-13 10:03:41 -07:00
db_filesnapshot.cc Don't delete files when column family is dropped 2015-03-19 17:04:29 -07:00
db_impl.cc Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
db_impl.h API to fetch from both a WriteBatchWithIndex and the db 2015-05-11 14:51:51 -07:00
db_impl_debug.cc Clean up old log files in background threads 2015-03-30 15:04:10 -04:00
db_impl_experimental.cc Don't compact bottommost level in SuggestCompactRange 2015-04-29 13:35:48 -07:00
db_impl_readonly.cc Move GetThreadList() feature under Env. 2014-12-22 12:20:17 -08:00
db_impl_readonly.h Block ReadOnlyDB in ROCKSDB_LITE 2014-11-26 11:37:59 -08:00
db_iter.cc fix typos 2015-04-25 18:14:27 +09:00
db_iter.h reduce references to cfd->options() in DBImpl 2014-09-08 15:04:34 -07:00
db_iter_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
db_test.cc DBTest.DynamicLevelMaxBytesBase2: remove an unnecesary check 2015-05-14 09:22:43 -07:00
dbformat.cc Turn on -Wshorten-64-to-32 and fix all the errors 2014-11-11 16:47:22 -05:00
dbformat.h Abstract out SetMaxPossibleForUserKey() and SetMinPossibleForUserKey 2015-04-23 18:08:37 -07:00
dbformat_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
deletefile_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
event_logger_helpers.cc Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
event_logger_helpers.h Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
experimental.cc Implement DB::PromoteL0 method 2015-04-23 12:10:36 -07:00
fault_injection_test.cc fault_injection_test: add a test case to cover log syncing after a log roll 2015-04-09 16:15:42 -07:00
file_indexer.cc Fix possible SIGSEGV in CompactRange (github issue #596) 2015-04-29 10:52:31 -07:00
file_indexer.h Turn on -Wshorten-64-to-32 and fix all the errors 2014-11-11 16:47:22 -05:00
file_indexer_test.cc Fix possible SIGSEGV in CompactRange (github issue #596) 2015-04-29 10:52:31 -07:00
filename.cc Sync manifest file when initializing it 2015-01-22 14:32:03 -08:00
filename.h Sync manifest file when initializing it 2015-01-22 14:32:03 -08:00
filename_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
flush_job.cc Add more table properties to EventLogger 2015-05-12 15:53:55 -07:00
flush_job.h Allow GetThreadList() to report operation stage. 2015-03-13 10:45:40 -07:00
flush_job_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
flush_scheduler.cc Don't return (or dereference) dangling pointer 2014-10-02 14:33:16 -07:00
flush_scheduler.h Fix data race #1 2015-01-26 11:48:07 -08:00
forward_iterator.cc rocksdb: Add missing override 2015-02-26 11:28:41 -08:00
forward_iterator.h rocksdb: Add missing override 2015-02-26 11:28:41 -08:00
internal_stats.cc Fix make unity build compiler warning about "stats" shadowing global variable 2015-04-01 10:48:42 -07:00
internal_stats.h Fix a compilation error in ROCKSDB_LITE in db/internal_stats.h 2015-04-09 16:43:54 -07:00
job_context.h Clean up old log files in background threads 2015-03-30 15:04:10 -04:00
listener_test.cc Fixed a bug in EventListener::OnCompactionCompleted(). 2015-05-12 16:10:23 -07:00
log_format.h Some minor refactoring on the code 2014-01-02 16:32:31 -08:00
log_reader.cc rocksdb: Fixed 'Dead assignment' and 'Dead initialization' scan-build warnings 2015-02-23 14:10:09 -08:00
log_reader.h Log writer record format doc. 2015-04-07 16:25:56 -07:00
log_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
log_writer.cc fix erroneous assert: cast kBlockSize (of type unsigned int) to "int" 2015-02-20 11:07:17 -08:00
log_writer.h Log writer record format doc. 2015-04-07 16:25:56 -07:00
managed_iterator.cc Fix compile error on MacOS. 2015-02-24 16:24:53 -08:00
managed_iterator.h Fixed xfunc related compile errors in ROCKSDB_LITE 2015-04-09 21:05:18 -07:00
memtable.cc Adding stats for the merge and filter operation 2015-03-24 14:42:04 -07:00
memtable.h Add thread-safety documentation to MemTable and related classes 2015-04-08 21:10:35 -07:00
memtable_allocator.cc Enforce write buffer memory limit across column families 2014-12-02 12:09:20 -08:00
memtable_allocator.h Enforce write buffer memory limit across column families 2014-12-02 12:09:20 -08:00
memtable_list.cc fix typos 2015-04-25 18:14:27 +09:00
memtable_list.h Fix valgrind issues in memtable_list_test 2015-04-10 14:16:03 -07:00
memtable_list_test.cc Include bunch of more events into EventLogger 2015-04-27 15:20:02 -07:00
memtablerep_bench.cc build: avoid unused-variable warning 2015-05-02 13:19:10 -07:00
merge_context.h API to fetch from both a WriteBatchWithIndex and the db 2015-05-11 14:51:51 -07:00
merge_helper.cc Helper function to time Merges 2015-04-27 20:23:50 -07:00
merge_helper.h Helper function to time Merges 2015-04-27 20:23:50 -07:00
merge_operator.cc Some small cleaning up to make some compiling environment happy 2014-03-26 18:11:41 -07:00
merge_test.cc rocksdb: Add missing override 2015-02-26 11:28:41 -08:00
perf_context_test.cc Makefile minor cleanup 2015-03-30 16:05:35 -04:00
plain_table_db_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
prefix_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
repair.cc options.paranoid_file_checks to read all rows after writing to a file. 2015-04-23 11:34:35 -07:00
skiplist.h Enforce write buffer memory limit across column families 2014-12-02 12:09:20 -08:00
skiplist_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
slice.cc Create an abstract interface for write batches 2015-03-17 19:23:08 -07:00
snapshot.h Cleanup CompactionJob 2015-05-05 19:01:12 -07:00
table_cache.cc TableMock + framework for mock classes 2014-10-28 17:52:32 -07:00
table_cache.h use GetContext to replace callback function pointer 2014-09-29 11:09:09 -07:00
table_properties_collector.cc A new call back to TablePropertiesCollector to allow users know the entry is add, delete or merge 2015-04-06 10:27:21 -07:00
table_properties_collector.h A new call back to TablePropertiesCollector to allow users know the entry is add, delete or merge 2015-04-06 10:27:21 -07:00
table_properties_collector_test.cc A new call back to TablePropertiesCollector to allow users know the entry is add, delete or merge 2015-04-06 10:27:21 -07:00
transaction_log_impl.cc Turn -Wshadow back on 2014-11-06 11:14:28 -08:00
transaction_log_impl.h rocksdb: Add missing override 2015-02-26 11:28:41 -08:00
version_builder.cc Fix deleting obsolete files 2015-02-06 08:44:30 -08:00
version_builder.h Move VersionBuilder logic to a separate .cc file 2014-10-31 16:34:38 -07:00
version_builder_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
version_edit.cc Turn on -Wshadow 2014-10-31 11:59:54 -07:00
version_edit.h Add experimental API MarkForCompaction() 2015-04-17 16:44:45 -07:00
version_edit_test.cc rocksdb: switch to gtest 2015-03-17 14:08:00 -07:00
version_set.cc Fix clang build 2015-04-30 11:11:35 -07:00
version_set.h Optimize GetApproximateSizes() to use lesser CPU cycles. 2015-04-30 10:55:03 -07:00
version_set_test.cc Fix level size overflow for options_.level_compaction_dynamic_level_bytes=true 2015-04-03 09:04:35 -07:00
wal_manager.cc rocksdb: Add missing override 2015-02-26 11:28:41 -08:00
wal_manager.h Fix -Wnon-virtual-dtor errors 2014-11-10 17:39:38 -05:00
wal_manager_test.cc Fix flakiness of WalManagerTest 2015-04-13 16:15:05 -07:00
write_batch.cc Adding stats for the merge and filter operation 2015-03-24 14:42:04 -07:00
write_batch_base.cc Create an abstract interface for write batches 2015-03-17 19:23:08 -07:00
write_batch_internal.h remove all remaining references to cfd->options() 2014-11-18 10:20:10 -08:00
write_batch_test.cc rocksdb: Remove #include "util/string_util.h" from util/testharness.h 2015-03-19 17:29:37 -07:00
write_controller.cc Push- instead of pull-model for managing Write stalls 2014-09-08 11:20:25 -07:00
write_controller.h Fix #284 2014-09-13 14:14:10 -07:00
write_controller_test.cc maint: use ASSERT_TRUE, not ASSERT_EQ(true; same for false 2015-04-17 14:54:17 -07:00
write_thread.cc WriteThread 2014-09-12 16:23:58 -07:00
write_thread.h Add a counter for collecting the wait time on db mutex. 2015-02-04 21:39:45 -08:00
writebuffer.h Enforce write buffer memory limit across column families 2014-12-02 12:09:20 -08:00