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ddl: gc mdl etcd key after cleaning the mdl table #39454
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This pull request has been accepted and is ready to merge. Commit hash: 3a58b89
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TiDB MergeCI notify✅ Well Done! New fixed [1] after this pr merged.
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Signed-off-by: wjhuang2016 huangwenjun1997@gmail.com
What problem does this PR solve?
Problem Summary:
We should gc mdl etcd key after cleaning the mdl table.
Otherwise, ddl may be blocked if the owner crash before cleaning the mdl table and the etcd key is gced
What is changed and how it works?
Check List
Tests
Side effects
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Release note
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