Questions and Suggestions on Incremental Consistency Check in DM6.5.0

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 关于DM6.5.0增量一致性校验的疑问和建议

| username: TiDBer_ehfuEzPc

Currently using DM V6.5.0 for data synchronization, I have some questions about incremental consistency checks:

  1. How does the fast mode perform checks when safe-mode is true and for data updates?
  2. Full mode: Can it support specifying fields for checks instead of checking all fields (checking is too slow when the data is too large)?
  3. Full mode: Can an automatic repair option be added, such as overwriting inconsistent data with upstream data (when there are too many inconsistencies, handling them row by row is too complex, and I don’t need to check, just take MySQL as the standard in case of inconsistencies)?
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| username: TiDBer_ehfuEzPc | Original post link

I have another question: Will incremental verification affect synchronization efficiency?