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ddl: don't delay for async commit if MDL is enabled #39446
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[REVIEW NOTIFICATION] This pull request has been approved by:
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/run-unit-test |
Signed-off-by: wjhuang2016 <huangwenjun1997@gmail.com>
@@ -1329,6 +1329,12 @@ type RecoverSchemaInfo struct { | |||
// It should be called before any DDL that could break data consistency. | |||
// This provides a safe window for async commit and 1PC to commit with an old schema. | |||
func delayForAsyncCommit() { | |||
if variable.EnableMDL.Load() { |
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Is it possible to switch off MDL during an ongoing DDL and break some constraints?
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No, we forbid switching MDL if there is any DDL running
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I cannot think of possible cases of inconsistency after MDL is enabled now. I hope our tests will be still happy in the following days.
/merge |
This pull request has been accepted and is ready to merge. Commit hash: d37f633
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/run-check_dev |
TiDB MergeCI notify
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Signed-off-by: wjhuang2016 huangwenjun1997@gmail.com
What problem does this PR solve?
Issue Number: ref #39196
Problem Summary:
No need to delay for async commit if MDL is enabled.
Check List
Tests
Side effects
Documentation
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