* `SstFileWriter::DeleteRange()` now returns `Status::InvalidArgument` if the range's end key comes before its start key according to the user comparator. Previously the behavior was undefined.
* Add `multi_get_for_update` to C API.
@ -14,6 +17,7 @@
### Bug Fixes
* In the DB::VerifyFileChecksums API, ensure that file system reads of SST files are equal to the readahead_size in ReadOptions, if specified. Previously, each read was 2x the readahead_size.
* In block cache tracing, fixed some cases of bad hit/miss information (and more) with MultiGet.
### New Features
* Add experimental `PerfContext` counters `iter_{next|prev|seek}_count` for db iterator, each counting the times of corresponding API being called.
@ -21,9 +25,6 @@
* Added statistics tickers BYTES_COMPRESSED_FROM, BYTES_COMPRESSED_TO, BYTES_COMPRESSION_BYPASSED, BYTES_COMPRESSION_REJECTED, NUMBER_BLOCK_COMPRESSION_BYPASSED, and NUMBER_BLOCK_COMPRESSION_REJECTED. Disabled/deprecated histograms BYTES_COMPRESSED and BYTES_DECOMPRESSED, and ticker NUMBER_BLOCK_NOT_COMPRESSED. The new tickers offer more inight into compression ratios, rejected vs. disabled compression, etc. (#11388)
* New statistics `rocksdb.file.read.{flush|compaction}.micros` that measure read time of block-based SST tables or blob files during flush or compaction.
### Bug Fixes
* In block cache tracing, fixed some cases of bad hit/miss information (and more) with MultiGet.
## 8.1.0 (03/18/2023)
### Behavior changes
* Compaction output file cutting logic now considers range tombstone start keys. For example, SST partitioner now may receive ParitionRequest for range tombstone start keys.
# To check for DB forward compatibility with loading options (old version
# reading data from new), as well as backward compatibility
declare -a db_forward_with_options_refs=("6.27.fb""6.28.fb""6.29.fb""7.0.fb""7.1.fb""7.2.fb""7.3.fb""7.4.fb""7.5.fb""7.6.fb""7.7.fb""7.8.fb""7.9.fb""7.10.fb""8.0.fb""8.1.fb")
declare -a db_forward_with_options_refs=("6.27.fb""6.28.fb""6.29.fb""7.0.fb""7.1.fb""7.2.fb""7.3.fb""7.4.fb""7.5.fb""7.6.fb""7.7.fb""7.8.fb""7.9.fb""7.10.fb""8.0.fb""8.1.fb""8.2.fb")
# To check for DB forward compatibility without loading options (in addition
# to the "with loading options" set), as well as backward compatibility
declare -a db_forward_no_options_refs=()# N/A at the moment