pingcap/tiflow

dm: let syncer wait relay catch up

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#3,379 创建于 2021年11月10日

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area/dmhelp wantedsubject/new-feature

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描述

Is your feature request related to a problem?

see discuss in #3365

most time it's not a problem, but may cause some integration cases fail

Describe the feature you'd like

solutions:

  • let relay catch up before restart syncers
  • syncer fails with a less severe error, try again internally and does not pause

Describe alternatives you've considered

No response

Teachability, Documentation, Adoption, Migration Strategy

No response

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