sql: fix data race in session serialization #90983
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This commit fixes a data race in session serialization that was introduced by ac280a9. Previously, the session serialization code attempted to read the original, parsed AST to create a redacted statement string. This is invalid because the AST is unfortunately not immutable, and serialization can occur concurrently with statement optimization and execution. Now, the session serializer re-parses the original SQL to avoid this issue. Release note: None
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ajwerner
approved these changes
Oct 31, 2022
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Reviewed 2 of 2 files at r1, all commit messages.
Reviewable status:complete! 1 of 0 LGTMs obtained (waiting on @rafiss)
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TFTR! bors r+ |
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Closes #90965
This commit fixes a data race in session serialization that was introduced by ac280a9.
Previously, the session serialization code attempted to read the original, parsed AST to create a redacted statement string. This is invalid because the AST is unfortunately not immutable, and serialization can occur concurrently with statement optimization and execution.
Now, the session serializer re-parses the original SQL to avoid this issue.
Release note: None