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Levi Tamasi 3e1bf771a3 Make it possible to force the garbage collection of the oldest blob files (#8994) 
Summary:
The current BlobDB garbage collection logic works by relocating the valid
blobs from the oldest blob files as they are encountered during compaction,
and cleaning up blob files once they contain nothing but garbage. However,
with sufficiently skewed workloads, it is theoretically possible to end up in a
situation when few or no compactions get scheduled for the SST files that contain
references to the oldest blob files, which can lead to increased space amp due
to the lack of GC.

In order to efficiently handle such workloads, the patch adds a new BlobDB
configuration option called `blob_garbage_collection_force_threshold`,
which signals to BlobDB to schedule targeted compactions for the SST files
that keep alive the oldest batch of blob files if the overall ratio of garbage in
the given blob files meets the threshold *and* all the given blob files are
eligible for GC based on `blob_garbage_collection_age_cutoff`. (For example,
if the new option is set to 0.9, targeted compactions will get scheduled if the
sum of garbage bytes meets or exceeds 90% of the sum of total bytes in the
oldest blob files, assuming all affected blob files are below the age-based cutoff.)
The net result of these targeted compactions is that the valid blobs in the oldest
blob files are relocated and the oldest blob files themselves cleaned up (since
*all* SST files that rely on them get compacted away).

These targeted compactions are similar to periodic compactions in the sense
that they force certain SST files that otherwise would not get picked up to undergo
compaction and also in the sense that instead of merging files from multiple levels,
they target a single file. (Note: such compactions might still include neighboring files
from the same level due to the need of having a "clean cut" boundary but they never
include any files from any other level.)

This functionality is currently only supported with the leveled compaction style
and is inactive by default (since the default value is set to 1.0, i.e. 100%).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8994

Test Plan: Ran `make check` and tested using `db_bench` and the stress/crash tests.

Reviewed By: riversand963

Differential Revision: D31489850

Pulled By: ltamasi

fbshipit-source-id: 44057d511726a0e2a03c5d9313d7511b3f0c4eab
2021-10-11 18:03:01 -07:00
..
blob Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
compaction Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
db_impl Ingest external SST files with Temperature hints (#8949) 2021-10-08 10:32:24 -07:00
arena_wrapped_db_iter.cc Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
arena_wrapped_db_iter.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
builder.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
builder.h Expose blob file information through the EventListener interface (#8675) 2021-09-16 17:23:36 -07:00
c_test.c Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
c.cc Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
column_family_test.cc Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
column_family.cc Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
column_family.h Add DB properties for BlobDB (#8734) 2021-09-08 12:22:04 -07:00
compact_files_test.cc Compaction should not move data to up level (#8116) 2021-03-29 17:10:42 -07:00
comparator_db_test.cc Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
convenience.cc Make ImmutableOptions struct that inherits from ImmutableCFOptions and ImmutableDBOptions (#8262) 2021-05-05 14:00:17 -07:00
corruption_test.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
cuckoo_table_db_test.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
db_basic_test.cc Change the File System File Wrappers to std::unique_ptr (#8618) 2021-09-13 08:46:19 -07:00
db_block_cache_test.cc Fix PrepopulateBlockCache::kFlushOnly (#8750) 2021-09-15 15:33:20 -07:00
db_bloom_filter_test.cc Make SliceTransform into a Customizable class (#8641) 2021-09-27 07:43:47 -07:00
db_compaction_filter_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_compaction_test.cc Cancel manual compactions waiting on automatic compactions to drain (#8991) 2021-10-07 15:23:55 -07:00
db_dynamic_level_test.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
db_encryption_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_filesnapshot.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
db_flush_test.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
db_info_dumper.cc Allow WAL dir to change with db dir (#8582) 2021-07-30 12:16:44 -07:00
db_info_dumper.h Add a DB Session ID (#6959) 2020-06-15 10:47:02 -07:00
db_inplace_update_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_io_failure_test.cc Make MemTableRepFactory into a Customizable class (#8419) 2021-09-08 07:46:44 -07:00
db_iter_stress_test.cc Make ImmutableOptions struct that inherits from ImmutableCFOptions and ImmutableDBOptions (#8262) 2021-05-05 14:00:17 -07:00
db_iter_test.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
db_iter.cc Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
db_iter.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
db_iterator_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_kv_checksum_test.cc Allow WriteBatch to have keys with different timestamp sizes (#8725) 2021-09-12 15:34:26 -07:00
db_log_iter_test.cc Attempt to deflake DBTestXactLogIterator.TransactionLogIteratorCorruptedLog (#8627) 2021-08-10 11:10:07 -07:00
db_logical_block_size_cache_test.cc Add further tests to ASSERT_STATUS_CHECKED (2) (#7698) 2020-12-09 21:21:16 -08:00
db_memtable_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_merge_operand_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_merge_operator_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_options_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_properties_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_range_del_test.cc Make MemTableRepFactory into a Customizable class (#8419) 2021-09-08 07:46:44 -07:00
db_secondary_test.cc Make MemTableRepFactory into a Customizable class (#8419) 2021-09-08 07:46:44 -07:00
db_sst_test.cc Don't ignore deletion rate limit if WAL dir is different (#8967) 2021-09-30 13:26:31 -07:00
db_statistics_test.cc Bytes read stat for VerifyChecksum() and VerifyFileChecksums() APIs (#8741) 2021-09-07 13:28:29 -07:00
db_table_properties_test.cc Make WalFilter, SstPartitionerFactory, FileChecksumGenFactory, and TableProperties Customizable (#8638) 2021-09-28 05:32:02 -07:00
db_tailing_iter_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_test2.cc Ingest external SST files with Temperature hints (#8949) 2021-10-08 10:32:24 -07:00
db_test_util.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
db_test_util.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
db_test.cc Make RateLimiter::GetTotalPendingRequest() non pure virtual for backward compability (#8938) 2021-09-21 21:29:26 -07:00
db_universal_compaction_test.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
db_wal_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_with_timestamp_basic_test.cc Support SingleDelete for user-defined timestamps (#8921) 2021-09-27 11:51:07 -07:00
db_with_timestamp_compaction_test.cc Make MemTableRepFactory into a Customizable class (#8419) 2021-09-08 07:46:44 -07:00
db_write_buffer_manager_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
db_write_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
dbformat_test.cc Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
dbformat.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
dbformat.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
deletefile_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
error_handler_fs_test.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
error_handler.cc DB::GetSortedWalFiles() to ensure file deletion is disabled (#8591) 2021-07-29 11:51:08 -07:00
error_handler.h Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
event_helpers.cc Expose blob file information through the EventListener interface (#8675) 2021-09-16 17:23:36 -07:00
event_helpers.h Expose blob file information through the EventListener interface (#8675) 2021-09-16 17:23:36 -07:00
experimental.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
external_sst_file_basic_test.cc Protect existing files in FaultInjectionTest{Env,FS}::ReopenWritableFile() (#8995) 2021-10-11 16:23:18 -07:00
external_sst_file_ingestion_job.cc Ingest external SST files with Temperature hints (#8949) 2021-10-08 10:32:24 -07:00
external_sst_file_ingestion_job.h Ingest external SST files with Temperature hints (#8949) 2021-10-08 10:32:24 -07:00
external_sst_file_test.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
fault_injection_test.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
file_indexer_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
file_indexer.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
file_indexer.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
filename_test.cc Remove unused includes (#7604) 2020-10-28 23:22:27 -07:00
flush_job_test.cc Fix NotifyOnFlushCompleted() for atomic flush (#8585) 2021-08-03 13:31:10 -07:00
flush_job.cc Expose blob file information through the EventListener interface (#8675) 2021-09-16 17:23:36 -07:00
flush_job.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
flush_scheduler.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
flush_scheduler.h Include C++ standard library headers instead of C compatibility headers (#8068) 2021-03-19 12:09:47 -07:00
forward_iterator_bench.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
forward_iterator.cc Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
forward_iterator.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
import_column_family_job.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
import_column_family_job.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
import_column_family_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
internal_stats.cc Use GetBlobFileSize instead of GetTotalBlobBytes in DB properties (#8902) 2021-09-13 10:47:16 -07:00
internal_stats.h Add DB properties for BlobDB (#8734) 2021-09-08 12:22:04 -07:00
job_context.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
kv_checksum.h Fix some lint warnings reported on 6.25 (#8945) 2021-09-27 11:43:20 -07:00
listener_test.cc Add file operation callbacks to SequentialFileReader (#8982) 2021-10-05 10:51:59 -07:00
log_format.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
log_reader.cc Fix kPointInTimeRecovery handling of truncated WAL (#7701) 2020-11-30 18:11:38 -08:00
log_reader.h Real fix for race in backup custom checksum checking (#7309) 2020-08-26 10:39:20 -07:00
log_test.cc Make StringEnv, StringSink, StringSource use FS classes (#7786) 2021-01-04 16:01:01 -08:00
log_writer.cc Using existing crc32c checksum in checksum handoff for Manifest and WAL (#8412) 2021-06-25 00:47:17 -07:00
log_writer.h Include C++ standard library headers instead of C compatibility headers (#8068) 2021-03-19 12:09:47 -07:00
logs_with_prep_tracker.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
logs_with_prep_tracker.h Include C++ standard library headers instead of C compatibility headers (#8068) 2021-03-19 12:09:47 -07:00
lookup_key.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
malloc_stats.cc Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
malloc_stats.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
manual_compaction_test.cc Add more tests for assert status checked (#7524) 2020-12-22 23:45:58 -08:00
memtable_list_test.cc Fix NotifyOnFlushCompleted() for atomic flush (#8585) 2021-08-03 13:31:10 -07:00
memtable_list.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
memtable_list.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
memtable.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
memtable.h Adapt key-value checksum for timestamp-suffixed keys (#8914) 2021-09-14 13:14:39 -07:00
merge_context.h Add Merge Operator support to WriteBatchWithIndex (#8135) 2021-05-10 12:50:25 -07:00
merge_helper_test.cc Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
merge_helper.cc Add support for Merge with base value during Compaction in IntegratedBlobDB (#8445) 2021-06-24 18:11:30 -07:00
merge_helper.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
merge_operator.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
merge_test.cc Built-in support for generating unique IDs, bug fix (#8708) 2021-08-30 15:20:41 -07:00
obsolete_files_test.cc Attempt to deflake ObsoleteFilesTest.DeleteObsoleteOptionsFile (#8624) 2021-08-05 18:36:16 -07:00
options_file_test.cc No elide constructors (#7798) 2020-12-23 16:55:53 -08:00
output_validator.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
output_validator.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
perf_context_test.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
periodic_work_scheduler_test.cc Fix a minor issue with initializing the test path (#8555) 2021-07-23 08:38:45 -07:00
periodic_work_scheduler.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
periodic_work_scheduler.h Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
pinned_iterators_manager.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
plain_table_db_test.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
pre_release_callback.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
prefix_test.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
range_del_aggregator_bench.cc Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
range_del_aggregator_test.cc Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
range_del_aggregator.cc In ParseInternalKey(), include corrupt key info in Status (#7515) 2020-10-28 10:12:58 -07:00
range_del_aggregator.h Fix some typos in comments (#8066) 2021-03-25 21:18:08 -07:00
range_tombstone_fragmenter_test.cc Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
range_tombstone_fragmenter.cc Added memtable garbage statistics (#8411) 2021-06-18 04:57:27 -07:00
range_tombstone_fragmenter.h Added memtable garbage statistics (#8411) 2021-06-18 04:57:27 -07:00
read_callback.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
repair_test.cc Some fixes and enhancements to ldb repair (#8544) 2021-07-28 16:44:14 -07:00
repair.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
snapshot_checker.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
snapshot_impl.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
snapshot_impl.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
table_cache.cc Add file temperature related counter and bytes stats to and io_stats (#8710) 2021-10-07 14:58:41 -07:00
table_cache.h Add file temperature related counter and bytes stats to and io_stats (#8710) 2021-10-07 14:58:41 -07:00
table_properties_collector_test.cc Support "level_at_creation" in TablePropertiesCollectorFactory::Context (#8919) 2021-09-28 12:35:24 -07:00
table_properties_collector.cc Apply sample_for_compression to all block-based tables (#8105) 2021-03-25 15:00:45 -07:00
table_properties_collector.h Support "level_at_creation" in TablePropertiesCollectorFactory::Context (#8919) 2021-09-28 12:35:24 -07:00
transaction_log_impl.cc Add file operation callbacks to SequentialFileReader (#8982) 2021-10-05 10:51:59 -07:00
transaction_log_impl.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
trim_history_scheduler.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
trim_history_scheduler.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
version_builder_test.cc Print blob file checksums as hex (#8437) 2021-06-22 09:49:44 -07:00
version_builder.cc Add file temperature related counter and bytes stats to and io_stats (#8710) 2021-10-07 14:58:41 -07:00
version_builder.h Handle blob files when options.best_efforts_recovery is true (#8180) 2021-04-19 11:56:14 -07:00
version_edit_handler.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
version_edit_handler.h Fixed manifest_dump issues when printing keys and values containing null characters (#8378) 2021-06-10 12:55:20 -07:00
version_edit_test.cc Make it able to ignore WAL related VersionEdits in older versions (#7873) 2021-01-19 19:27:53 -08:00
version_edit.cc Write file temperature information to manifest (#8284) 2021-05-17 15:15:23 -07:00
version_edit.h Write file temperature information to manifest (#8284) 2021-05-17 15:15:23 -07:00
version_set_test.cc Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
version_set.cc Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
version_set.h Make it possible to force the garbage collection of the oldest blob files (#8994) 2021-10-11 18:03:01 -07:00
wal_edit_test.cc Always track WAL obsoletion (#7759) 2020-12-09 16:02:12 -08:00
wal_edit.cc Always track WAL obsoletion (#7759) 2020-12-09 16:02:12 -08:00
wal_edit.h Always track WAL obsoletion (#7759) 2020-12-09 16:02:12 -08:00
wal_manager_test.cc Make SystemClock into a Customizable Class (#8636) 2021-09-21 09:23:48 -07:00
wal_manager.cc Allow WAL dir to change with db dir (#8582) 2021-07-30 12:16:44 -07:00
wal_manager.h Allow WAL dir to change with db dir (#8582) 2021-07-30 12:16:44 -07:00
write_batch_base.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_batch_internal.h Adapt key-value checksum for timestamp-suffixed keys (#8914) 2021-09-14 13:14:39 -07:00
write_batch_test.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
write_batch.cc Adapt key-value checksum for timestamp-suffixed keys (#8914) 2021-09-14 13:14:39 -07:00
write_callback_test.cc Move slow valgrind tests behind -DROCKSDB_FULL_VALGRIND_RUN (#8475) 2021-07-07 11:14:05 -07:00
write_callback.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
write_controller_test.cc Revamp WriteController (#8064) 2021-03-18 09:47:31 -07:00
write_controller.cc Revamp WriteController (#8064) 2021-03-18 09:47:31 -07:00
write_controller.h Revamp WriteController (#8064) 2021-03-18 09:47:31 -07:00
write_thread.cc Stall writes in WriteBufferManager when memory_usage exceeds buffer_size (#7898) 2021-04-21 13:54:02 -07:00
write_thread.h typo: fix typo in db/write_thread's state (#8423) 2021-06-18 17:14:51 -07:00