v.21.11Improvements

Fixed race condition causing Dictionary not found error

Official CH changelog text
Fixed logical race condition that might cause Dictionary not found error for existing dictionary in rare cases. #28853 (tavplubix).
Fixed a rare logical race condition that could cause a Dictionary not found error for existing dictionaries.

Why it matters

This fix addresses an intermittent issue where users might see a Dictionary not found error despite the dictionary existing. It improves the stability and reliability of dictionary usage in ClickHouse by preventing this race condition.

How to use it

No special action is needed from users. Updating to the version that includes this fix will automatically resolve the race condition and prevent these errors.

Related resources

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