TiKV - v6.2.0

Improvements

• Support compressing the metrics response using gzip to reduce the HTTP body size #12355 @glorv
• Improve the readability of the TiKV panel in Grafana Dashboard #12007 @kevin-xianliu
• Optimize the commit pipeline performance of the Apply operator #12898 @ethercflow
• Support dynamically modifying the number of sub-compaction operations performed concurrently in RocksDB (rocksdb.max-sub-compactions) #13145 @ethercflow

Bug fixes

• Avoid reporting WriteConflict errors in pessimistic transactions #11612 @sticnarf
• Fix the possible duplicate commit records in pessimistic transactions when async commit is enabled #12615 @sticnarf
• Fix the issue that TiKV panics when modifying the storage.api-version from 1 to 2 #12600 @pingyu
• Fix the issue of inconsistent Region size configuration between TiKV and PD #12518 @5kbpers
• Fix the issue that TiKV keeps reconnecting PD clients #12506, #12827 @Connor1996
• Fix the issue that TiKV panics when performing type conversion for an empty string #12673 @wshwsh12
• Fix the issue of time parsing error that occurs when the DATETIME values contain a fraction and Z #12739 @gengliqi
• Fix the issue that the perf context written by the Apply operator to TiKV RocksDB is coarse-grained #11044 @LykxSassinator
• Fix the issue that TiKV fails to start when the configuration of backup/import/cdc is invalid #12771 @3pointer
• Fix the panic issue that might occur when a peer is being split and destroyed at the same time #12825 @BusyJay
• Fix the panic issue that might occur when the source peer catches up logs by snapshot in the Region merge process #12663 @BusyJay
• Fix the panic issue caused by analyzing statistics when max_sample_size is set to 0 #11192 @LykxSassinator
• Fix the issue that encryption keys are not cleaned up when Raft Engine is enabled #12890 @tabokie
• Fix the issue that the get_valid_int_prefix function is incompatible with TiDB. For example, the FLOAT type was incorrectly converted to INT #13045 @guo-shaoge
• Fix the issue that the Commit Log Duration of a new Region is too high, which causes QPS to drop #13077 @Connor1996
• Fix the issue that PD does not reconnect to TiKV after the Region heartbeat is interrupted #12934 @bufferflies