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RocksDB 9.2.1
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@anand1976 anand1976 released this 23 May 17:14
· 2 commits to 9.2.fb since this release
v9.2.1
08f9322

9.2.1 (2024-05-03)

Public API Changes

  • Add a kAdmPolicyAllowAll option to TieredAdmissionPolicy that admits all blocks evicted from the primary block cache into the compressed secondary cache.

9.2.0 (2024-05-01)

New Features

  • Added two options deadline and max_size_bytes for CacheDumper to exit early
  • Added a new API GetEntityFromBatchAndDB to WriteBatchWithIndex that can be used for wide-column point lookups with read-your-own-writes consistency. Similarly to GetFromBatchAndDB, the API can combine data from the write batch with data from the underlying database if needed. See the API comments for more details.
  • [Experimental] Introduce two new cross-column-family iterators - CoalescingIterator and AttributeGroupIterator. The CoalescingIterator enables users to iterate over multiple column families and access their values and columns. During this iteration, if the same key exists in more than one column family, the keys in the later column family will overshadow the previous ones. The AttributeGroupIterator allows users to gather wide columns per Column Family and create attribute groups while iterating over keys across all CFs.
  • Added a new API MultiGetEntityFromBatchAndDB to WriteBatchWithIndex that can be used for batched wide-column point lookups with read-your-own-writes consistency. Similarly to MultiGetFromBatchAndDB, the API can combine data from the write batch with data from the underlying database if needed. See the API comments for more details.
  • *Adds a SstFileReader::NewTableIterator API to support programmatically read a SST file as a raw table file.
  • Add an option to WaitForCompactOptions - wait_for_purge to make WaitForCompact() API wait for background purge to complete

Public API Changes

  • DeleteRange() will return NotSupported() if row_cache is configured since they don't work together in some cases.
  • Deprecated CompactionOptions::compression since CompactionOptions's API for configuring compression was incomplete, unsafe, and likely unnecessary
  • Using OptionChangeMigration() to migrate from non-FIFO to FIFO compaction
    with Options::compaction_options_fifo.max_table_files_size > 0 can cause
    the whole DB to be dropped right after migration if the migrated data is larger than
    max_table_files_size

Behavior Changes

  • Enabling BlockBasedTableOptions::block_align is now incompatible (i.e., APIs will return Status::InvalidArgument) with more ways of enabling compression: CompactionOptions::compression, ColumnFamilyOptions::compression_per_level, and ColumnFamilyOptions::bottommost_compression.
  • Changed the default value of CompactionOptions::compression to kDisableCompressionOption, which means the compression type is determined by the ColumnFamilyOptions.
  • BlockBasedTableOptions::optimize_filters_for_memory is now set to true by default. When partition_filters=false, this could lead to somewhat increased average RSS memory usage by the block cache, but this "extra" usage is within the allowed memory budget and should make memory usage more consistent (by minimizing internal fragmentation for more kinds of blocks).
  • Dump all keys for cache dumper impl if SetDumpFilter() is not called
  • CompactRange() with CompactRangeOptions::change_level = true and CompactRangeOptions::target_level = 0 that ends up moving more than 1 file from non-L0 to L0 will return Status::Aborted().
  • On distributed file systems that support file system level checksum verification and reconstruction reads, RocksDB will now retry a file read if the initial read fails RocksDB block level or record level checksum verification. This applies to MANIFEST file reads when the DB is opened, and to SST file reads at all times.

Bug Fixes

  • Fix a bug causing VerifyFileChecksums() to return false-positive corruption under BlockBasedTableOptions::block_align=true
  • Provide consistent view of the database across the column families for NewIterators() API.
  • Fixed feature interaction bug for DeleteRange() together with ColumnFamilyOptions::memtable_insert_with_hint_prefix_extractor. The impact of this bug would likely be corruption or crashing.
  • Fixed hang in DisableManualCompactions() where compactions waiting to be scheduled due to conflicts would not be canceled promptly
  • Fixed a regression when ColumnFamilyOptions::max_successive_merges > 0 where the CPU overhead for deciding whether to merge could have increased unless the user had set the option ColumnFamilyOptions::strict_max_successive_merges
  • Fixed a bug in MultiGet() and MultiGetEntity() together with blob files (ColumnFamilyOptions::enable_blob_files == true). An error looking up one of the keys could cause the results to be wrong for other keys for which the statuses were Status::OK.
  • Fixed a bug where wrong padded bytes are used to generate file checksum and DataVerificationInfo::checksum upon file creation
  • Correctly implemented the move semantics of PinnableWideColumns.
  • Fixed a bug when the recycle_log_file_num in DBOptions is changed from 0 to non-zero when a DB is reopened. On a subsequent reopen, if a log file created when recycle_log_file_num==0 was reused previously, is alive and is empty, we could end up inserting stale WAL records into the memtable.
  • *Fix a bug where obsolete files' deletion during DB::Open are not rate limited with SstFilemManager's slow deletion feature even if it's configured.
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