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Support partitioned checkpoint #1157

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4 tasks
Tracked by #1158
hzxa21 opened this issue Mar 22, 2022 · 1 comment
Closed
4 tasks
Tracked by #1158

Support partitioned checkpoint #1157

hzxa21 opened this issue Mar 22, 2022 · 1 comment
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hzxa21 commented Mar 22, 2022

To improve our checkpoint strategy, we decide to support checkpoint in MView granularity with configurable consistency. In other words, each MView can complete its checkpoint independently.

  • Introduce hummock group in hummock manager to track MaxCommittedEpoch (MCE) of each MView
  • Support reads/writes with hummock group
  • Support group based barrier injection/collection and epoch commit
  • Support group based failover

Discussion:

  • How to ensure query consistency after failover (rollback MCE or not? If not, frontend waits or storage waits?)
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