TiKV - v6.0.0

Improvements

• Improve the Raftstore sampling accuracy for large key range batches #11039
• Add the correct "Content-Type" for debug/pprof/profile to make the Profile more easily identified #11521
• Renew the lease time of the leader infinitely when the Raftstore has heartbeats or handles read requests, which helps reduce latency jitter #11579
• Choose the store with the least cost when switching the leader, which helps improve performance stability #10602
• Fetch Raft logs asynchronously to reduce the performance jitter caused by blocking the Raftstore #11320
• Support the QUARTER function in vector calculation #5751
• Support pushing down the BIT data type to TiKV #30738
• Support pushing down the MOD function and the SYSDATE function to TiKV #11916
• (dup: release-5.3.1.md > Improvements> TiKV)- Reduce the TiCDC recovery time by reducing the number of the Regions that require the Resolve Locks step #11993
• Support dynamically modifying raftstore.raft-max-inflight-msgs #11865
• Support EXTRA_PHYSICAL_TABLE_ID_COL_ID to enable dynamic pruning mode #11888
• Support calculation in buckets #11759
• Encode the keys of RawKV API V2 as user-key + memcomparable-padding + timestamp #11965
• Encode the values of RawKV API V2 as user-value + ttl + ValueMeta and encode delete in ValueMeta #11965
• TiKV Coprocessor supports the Projection operator #12114
• Support dynamically modifying raftstore.raft-max-size-per-msg #12017
• Support monitoring multi-k8s in Grafana #12014
• Transfer the leadership to CDC observer to reduce latency jitter #12111
• Support dynamically modifying raftstore.apply_max_batch_size and raftstore.store_max_batch_size #11982
• RawKV V2 returns the latest version upon receiving the raw_get or raw_scan request #11965
• Support the RCCheckTS consistency reads #12097
• Support dynamically modifying storage.scheduler-worker-pool-size(the thread count of the Scheduler pool) #12067
• Control the use of CPU and bandwidth by using the global foreground flow controller to improve the performance stability of TiKV #11855
• Support dynamically modifying readpool.unified.max-thread-count (the thread count of the UnifyReadPool) #11781
• Use the TiKV internal pipeline to replace the RocksDB pipeline and deprecate the rocksdb.enable-multibatch-write parameter #12059

Bug Fixes

• (dup: release-5.3.1.md > Bug fixes> TiKV)- Fix the panic issue caused by deleting snapshot files when the peer status is Applying #11746
• (dup: release-5.3.1.md > Bug fixes> TiKV)- Fix the issue of QPS drop when flow control is enabled and level0_slowdown_trigger is set explicitly #11424
• (dup: release-5.3.1.md > Bug fixes> TiKV)- Fix the issue that destroying a peer might cause high latency #10210
• (dup: release-5.3.1.md > Bug fixes> TiKV)- Fix a bug that TiKV cannot delete a range of data (unsafe_destroy_range cannot be executed) when the GC worker is busy #11903
• Fix a bug that TiKV panics when the data in StoreMeta is accidentally deleted in some corner cases #11852
• Fix a bug that TiKV panics when performing profiling on an ARM platform #10658
• Fix a bug that TiKV might panic if it has been running for 2 years or more #11940
• Fix the compilation issue on the ARM64 architecture caused by missing SSE instruction set #12034
• (dup: release-5.3.1.md > Bug fixes> TiKV)- Fix the issue that deleting an uninitialized replica might cause an old replica to be recreated #10533
• Fix the bug that stale messages causes TiKV to panic #12023
• Fix the issue that undefined behavior (UB) might occur in TsSet conversions #12070
• Fix a bug that replica reads might violate the linearizability #12109
• Fix the potential panic issue that occurs when TiKV performs profiling on Ubuntu 18.04 #9765
• Fix the issue that tikv-ctl returns an incorrect result due to its wrong string match #12049
• Fix the issue of intermittent packet loss and out of memory (OOM) caused by the overflow of memory metrics #12160
• Fix the potential issue of mistakenly reporting TiKV panics when exiting TiKV #12231