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TiDB 3.1 Beta.1 Release Notes
/docs/dev/releases/release-3.1.0-beta.1/
/docs/dev/releases/3.1.0-beta.1/
TiDB 3.1 Beta.1 was released on January 10, 2020. The release includes changes to TiKV, such as renaming backup files and adding incremental backup features. Tools like BR have improved backup progress information and added features for partitioned tables. TiDB Ansible now automatically disables Transparent Huge Pages and adds Grafana monitoring for BR components. Overall, the release focuses on improving backup and restore processes, monitoring, and deployment optimization.

TiDB 3.1 Beta.1 Release Notes

Release date: January 10, 2020

TiDB version: 3.1.0-beta.1

TiDB Ansible version: 3.1.0-beta.1

TiKV

  • backup

    • Change the name of the backup file from start_key to the hash value of start_key to reduce the file name's length for easy reading #6198
    • Disable RocksDB's force_consistency_checks check to avoid false positives in the consistency check #6249
    • Add the incremental backup feature #6286

  • sst_importer

    • Fix the issue that the SST file does not have MVCC properties during restoring #6378
    • Add the monitoring items such as tikv_import_download_duration, tikv_import_download_bytes, tikv_import_ingest_duration, tikv_import_ingest_bytes, and tikv_import_error_counter to observe the overheads of downloading and ingesting SST files #6404

  • raftstore

    • Fix the issue of Follower Read that the follower reads stale data when the leader changes, thus breaking transaction isolation #6343

Tools

  • BR (Backup and Restore)
    • Fix the inaccurate backup progress information #127
    • Improve the performance of splitting Regions #122
    • Add the backup and restore feature for partitioned tables #137
    • Add the feature of automatically scheduling PD schedulers #123
    • Fix the issue that data is overwritten after non PKIsHandle tables are restored #139

TiDB Ansible

  • Add the feature of automatically disabling Transparent Huge Pages (THP) in the operating system during the initialization phase #1086
  • Add the Grafana monitoring for BR components #1093
  • Optimize the deployment of TiDB Lightning by automatically creating related directories #1104