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cdc: add changefeed epoch to prevent unexpected state (#8268) #8298

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This is an automated cherry-pick of #8268

What problem does this PR solve?

Issue Number: close #7657
Also close #8242

What is changed and how it works?

Add changefeed epoch, so we can distinguish messages after changefeed restart.

Check List

Tests

  • Unit test

Questions

Will it cause performance regression or break compatibility?

No

Do you need to update user documentation, design documentation or monitoring documentation?

No

Release note

Fix an issue that may cause data lost or checkpoint stuck when changefeed restarting.

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
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@ti-chi-bot ti-chi-bot added area/ticdc Issues or PRs related to TiCDC. release-note Denotes a PR that will be considered when it comes time to generate release notes. do-not-merge/cherry-pick-not-approved size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. status/LGT2 Indicates that a PR has LGTM 2. type/cherry-pick-for-release-6.1 This PR is cherry-picked to release-6.1 from a source PR. labels Feb 19, 2023
@VelocityLight VelocityLight added the cherry-pick-approved Cherry pick PR approved by release team. label Feb 19, 2023
@VelocityLight VelocityLight added do-not-merge/cherry-pick-not-approved and removed cherry-pick-approved Cherry pick PR approved by release team. labels Mar 24, 2023
@VelocityLight VelocityLight added cherry-pick-approved Cherry pick PR approved by release team. do-not-merge/cherry-pick-not-approved and removed do-not-merge/cherry-pick-not-approved cherry-pick-approved Cherry pick PR approved by release team. labels Mar 24, 2023
@ti-chi-bot ti-chi-bot removed the cherry-pick-approved Cherry pick PR approved by release team. label Jun 26, 2023
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ti-chi-bot bot commented Jun 26, 2023

This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick, it must first be approved by the collaborators.

AFTER it has been approved by collaborators, please ping the release team in a comment to request a cherry pick review.

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3 participants