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br: Ignore ddl jobs with empty query or blacklist type when exec restore (#33384) #33515

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@ti-srebot ti-srebot commented Mar 28, 2022

cherry-pick #33384 to release-5.2
You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/33515

After apply modifications, you can push your change to this PR via:

git push [email protected]:ti-srebot/tidb.git pr/33515:release-5.2-11db01105405

What problem does this PR solve?

Issue Number: close #33322

Problem Summary: Sometimes, query of ddl job can be empty, which will cause error when execute incremental restore.

What is changed and how it works?

During backup, when we find ddl job with action types about TiFlash or lock/unlock table, we will set the query empty. So we add an action type blacklist, ddl job with action type in blacklist will be ignored. We also ignore ddl job with empty query in case other unexpected situation.

This means that we will ignore ddl jobs about TiFlash or lock/unlock table and ddl jobs with empty query, so they won't cause error by mistake.

Check List

  • Unit test

Release note

Fix a bug that BR incremental restore return error by mistake caused by ddl job with empty query.

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@ti-srebot: 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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@ti-chi-bot ti-chi-bot added the do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. label Mar 28, 2022
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/run-all-tests

@ti-chi-bot ti-chi-bot added release-note Denotes a PR that will be considered when it comes time to generate release notes. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed do-not-merge/release-note-label-needed Indicates that a PR should not merge because it's missing one of the release note labels. labels Mar 28, 2022
@ti-srebot ti-srebot added component/br This issue is related to BR of TiDB. type/5.2-cherry-pick labels Mar 28, 2022
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This pull request is closed because it's related version has closed automatic cherry-picking.
If it's still needed, you can reopen it or just regenerate it using bot,
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