# ClickHouse v25.8.31.9-lts — Release v25.8.31.9-lts

- Product: ClickHouse (https://whatsnew.fyi/product/clickhouse)
- Vendor: ClickHouse
- Date: 2026-08-20
- Version: v25.8.31.9-lts
- Original notes: https://github.com/ClickHouse/ClickHouse/releases/tag/v25.8.31.9-lts
- Permalink: https://whatsnew.fyi/product/clickhouse/releases/v25.8.31.9-lts
- Labels: Machine-generated from commit messages — the vendor published no release notes

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Fixed invalid result of joining two -Cluster table functions.
- **fixed** — Fixed data race on FileCacheQueryLimit::query_map causing LOGICAL_ERROR.
- **fixed** — Fixed custom-key parallel replicas read when the requested stage cannot absorb finalized data.
- **fixed** — Fixed Parquet background reads not being stopped before releasing the format's read buffer.
- **fixed** — Fixed row policy AST analysis in place in Merge table engine.
- **fixed** — Fixed METADATA_VERSION_FILE_NAME handling by unlinking before rewrite.
- **fixed** — Added fsync for restored part files on RESTORE to survive power loss.
- **changed** — Bumped libssh to 0.12.0.