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PR #96102 - sql: use in-memory session data to decide what to do in DISCARD #16142

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cockroach-teamcity opened this issue Jan 28, 2023 · 0 comments
Open

PR #96102 - sql: use in-memory session data to decide what to do in DISCARD #16142

cockroach-teamcity opened this issue Jan 28, 2023 · 0 comments
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C-product-change release-22.2

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cockroach-teamcity commented Jan 28, 2023 •
edited by exalate-issue-sync bot
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Exalate commented:

Related PR: cockroachdb/cockroach#96102
Commit: cockroachdb/cockroach@a814125

Release note (performance improvement): In 22.2, we introduced support for
DISCARD TEMP and made DISCARD ALL actually discard temp tables. This
implementation ran expensive logic to discover temp schemas rather than
consulting in-memory data structures. As a result, DISCARD ALL, which
is issued regularly by connection pools, became an expensive operation
when it should be cheap. This problem is now resolved.

Jira Issue: DOC-6699
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