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pd-server v2.1.0-beta

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@huachaohuang huachaohuang released this 29 Jun 16:20
· 3463 commits to master since this release
v2.1.0-beta
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Learn about vigilant mode.

Improvements

  • Enable Raft PreVote between PD nodes to avoid leader reelection when network recovers after network isolation
  • Optimize the issue that Balance Scheduler schedules small Regions frequently
  • Optimize the hotspot scheduler to improve its adaptability in traffic statistics information jitters
  • Skip the Regions with a large number of rows when scheduling region merge
  • Enable raft learner by default to lower the risk of unavailable data caused by machine failure during scheduling
  • Remove max-replica from pd-recover
  • Add Filter metrics

Bug Fixes

  • Fix the issue that Region information is not updated after tikv-ctl unsafe recovery
  • Fix the issue that TiKV disk space is used up caused by replica migration in some scenarios

Compatibility notes

  • Do not support rolling back to v2.0.x or earlier due to update of the new version storage engine
  • Enable raft learner by default in the new version of PD. If the cluster is upgraded from 1.x to 2.1, the machine should be stopped before upgrade or a rolling update should be first applied to TiKV and then PD
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