tikv v4.0.16 Release Notes

Release Date: 2021-12-17 // over 2 years ago
    • Compatibility Changes
      • Before v4.0.16, when TiDB converts an illegal UTF-8 string to a Real type, an error is reported directly. Starting from v4.0.16, TiDB processes the conversion according to the legal UTF-8 prefix in the string #11466
    • 👌 Improvements
      • Reduce disk space consumption by adopting the zstd algorithm to compress SST files when restoring data using Backup & Restore or importing data using Local-backend of TiDB Lightning #11469
    • 🐛 Bug Fixes
      • Fix a panic issue that occurs when Region merge, ConfChange, and Snapshot happen at the same time in extreme conditions #11475
      • Fix the issue of negative sign when the decimal divide result is zero #29586
      • Fix the issue that the average latency of the by-instance gRPC requests is inaccurate in TiKV metrics #11299
      • Fix the issue of TiCDC panic that occurs when the downstream database is missing #11123
      • Fix the issue that the Raft connection is broken when the channel is full #11047
      • Fix the issue that TiDB cannot correctly identify whether the Int64 types in Max/Min functions are a signed integer or not, which causes the wrong calculation result of Max/Min #10158
      • Fix the issue that CDC adds scan retries frequently due to the Congest error #11082