TiKV - v6.1.1

Improvements

• Support compressing the metrics response using gzip to reduce the HTTP body size #12355 @winoros
• Support reducing the amount of data returned for each request by filtering out some metrics using the server.simplify-metrics configuration item #12355 @glorv
• Support dynamically modifying the number of sub-compaction operations performed concurrently in RocksDB (rocksdb.max-sub-compactions) #13145 @ethercflow

Bug fixes

• Fix a bug that Regions might be overlapped if Raftstore is busy #13160 @5kbpers
• Fix the issue that PD does not reconnect to TiKV after the Region heartbeat is interrupted #12934 @bufferflies
• Fix the issue that TiKV panics when performing type conversion for an empty string #12673 @wshwsh12
• Fix the issue of inconsistent Region size configuration between TiKV and PD #12518 @5kbpers
• Fix the issue that encryption keys are not cleaned up when Raft Engine is enabled #12890 @tabokie
• 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 issue of frequent PD client reconnection that occurs when the PD client meets an error #12345 @Connor1996
• Fix potential panic when parallel recovery is enabled for Raft Engine #13123 @tabokie
• Fix the issue that the Commit Log Duration of a new Region is too high, which causes QPS to drop #13077 @Connor1996
• Fix rare panics when Raft Engine is enabled #12698 @tabokie
• Avoid redundant log warnings when proc filesystem (procfs) cannot be found #13116 @tabokie
• Fix the wrong expression of Unified Read Pool CPU in dashboard #13086 @glorv
• Fix the issue that when a Region is large, the default region-split-check-diff might be larger than the bucket size #12598 @tonyxuqqi
• Fix the issue that TiKV might panic when Apply Snapshot is aborted and Raft Engine is enabled #12470 @tabokie
• Fix the issue that the PD client might cause deadlocks #13191 @bufferflies #12933 @BurtonQin (Boqin Qin