ClickHouse/docs/changelogs/v21.6.7.57-stable.md

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1	2022

2022 Changelog

ClickHouse release v21.6.7.57-stable FIXME as compared to v21.6.6.51-stable

Bug Fix

• Backported in #25955: Fix ALTER MODIFY COLUMN of columns, which participates in TTL expressions. #25554 (Anton Popov).
• Backported in #25959: Fix extremely long backoff for background tasks when the background pool is full. Fixes #25836. #25893 (alesapin).
• Backported in #26096: Fix wrong thread estimation for right subquery join in some cases. Close #24075. #26052 (Vladimir C).
• Backported in #26143: Fix possible crash in pointInPolygon if the setting validate_polygons is turned off. #26113 (Alexey Milovidov).

NOT FOR CHANGELOG / INSIGNIFICANT

• 21.6 manual backport of #25970 #26138 (Maksim Kita).