br: Ignore ddl jobs with empty query or blacklist type when exec restore

[WangLe1321]

Signed-off-by: WangLe1321 wangle1321@163.com

What problem does this PR solve?

Issue Number: #33322

cherry-pick pingcap/tidb#33384

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

Tests

• Unit test

Code changes

• Has exported function/method change
• Has exported variable/fields change

Side effects

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release note

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

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• YuJuncen
• joccau

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All committers have signed the CLA.

[joccau]

cherry-pick pingcap/tidb#33384

[joccau]

LGTM

[joccau]

/merge

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/merge

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[YuJuncen]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 6790ba7