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ClickHouse/docs/changelogs/v20.8.17.25-lts.md

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ClickHouse release v20.8.17.25-lts FIXME as compared to v20.8.16.20-lts

Bug Fix

  • Backported in #21341: Disable constant folding for subqueries on the analysis stage, when the result cannot be calculated. #18446 (Azat Khuzhin).
  • Backported in #22698: Fix wait for mutations on several replicas for ReplicatedMergeTree table engines. Previously, mutation/alter query may finish before mutation actually executed on other replicas. #22669 (alesapin).
  • Backported in #22737: Fix possible hangs in zk requests in case of OOM exception. Fixes #22438. #22684 (Nikolai Kochetov).

Build/Testing/Packaging Improvement