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ESQL: Add known issue for VALUES (8.17) #123288

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Feb 24, 2025
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ESQL: Add known issue for VALUES (8.17) #123288

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4 changes: 4 additions & 0 deletions docs/reference/release-notes/8.17.2.asciidoc
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Expand Up @@ -48,4 +48,8 @@ Snapshot/Restore::
Ingest Node::
* Improve memory aspects of enrich cache {es-pull}120256[#120256] (issues: {es-issue}96050[#96050], {es-issue}120021[#120021])

[discrete]
[[known-issues-8.17.2]]
=== Known issues

* `VALUES` aggregate function can run for a long, long time when collecting many, many groups. Hundreds of thousands of groups can run on one thread for many minutes and millions of groups run for days. It is O(n^2^) with the number of groups. These will not respond to the tasks cancellation API the whole time. Fixed by {es-pull}#123073[#123073] and available in 8.16.5, 8.17.3, 8.18.0, and all releases after that.