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Fix crash in mergeTreeAnalyzeIndexes() with non existing parts and table with skipping indexes

pr-not-for-changelogThis PR should not be mentioned in the changelogThis PR should not be mentioned in the changelog

Status: Open (in progress).

ClickHouse/ClickHousenumber 93859

#93859 In ClickHouse/ClickHouse;

· azat opened on Jan 9, 2026

Avoid shutdown hung due to storage leftovers in database catalog

pr-bugfixPull request with bugfix, not backported by defaultPull request with bugfix, not backported by default

Status: Open (in progress).

ClickHouse/ClickHousenumber 93853

#93853 In ClickHouse/ClickHouse;

· azat opened on Jan 9, 2026

Finalize zookeeper client without holding a lock

pr-bugfixPull request with bugfix, not backported by defaultPull request with bugfix, not backported by default

Status: Draft (not ready).

ClickHouse/ClickHousenumber 93678

#93678 In ClickHouse/ClickHouse;

· azat opened on Jan 8, 2026

Fix leaving possibly broken distributed connections in the pool

pr-bugfixPull request with bugfix, not backported by defaultPull request with bugfix, not backported by default

Status: Draft (not ready).

ClickHouse/ClickHousenumber 93171

#93171 In ClickHouse/ClickHouse;

· azat opened on Dec 29, 2025

RFC: Reimplement INSERTs into aliases columns without rewrite on AST level

pr-improvementPull request with some product improvementsPull request with some product improvements

Status: Open (in progress).

ClickHouse/ClickHousenumber 92907

#92907 In ClickHouse/ClickHouse;

· azat opened on Dec 23, 2025

Revert "Fix permanent blocked distributed sends if DROP of distributed table fails"

pr-not-for-changelogThis PR should not be mentioned in the changelogThis PR should not be mentioned in the changelog

Status: Draft (not ready).

ClickHouse/ClickHousenumber 89135

#89135 In ClickHouse/ClickHouse;

· azat opened on Oct 29, 2025

Prevent unblocking a higher-level MemoryTracker and add some guard rails

pr-not-for-changelogThis PR should not be mentioned in the changelogThis PR should not be mentioned in the changelog

Status: Draft (not ready).

ClickHouse/ClickHousenumber 88483

#88483 In ClickHouse/ClickHouse;

· azat opened on Oct 13, 2025

Avoid <code>total_memory_profiler_*</code> overrides per-query <code>memory_profiler_sample_*</code> settings and enable memory sample profiler on CI

pr-improvementPull request with some product improvementsPull request with some product improvements

Status: Draft (not ready).

ClickHouse/ClickHousenumber 88405

#88405 In ClickHouse/ClickHouse;

· azat opened on Oct 12, 2025

Remove libstdc++ headers from docker images

pr-not-for-changelogThis PR should not be mentioned in the changelogThis PR should not be mentioned in the changelog

submodule changedAt least one submodule changed in this PR.At least one submodule changed in this PR.

Status: Draft (not ready).

ClickHouse/ClickHousenumber 88182

#88182 In ClickHouse/ClickHouse;

· azat opened on Oct 7, 2025

Distributed Index Analysis

pr-featurePull request with new product featurePull request with new product feature

Status: Open (in progress).

ClickHouse/ClickHousenumber 86786

#86786 In ClickHouse/ClickHouse;

· azat opened on Sep 7, 2025

Ensure that CompletedPipelineExecutor uses threads

pr-bugfixPull request with bugfix, not backported by defaultPull request with bugfix, not backported by default

Status: Draft (not ready).

ClickHouse/ClickHousenumber 79449

#79449 In ClickHouse/ClickHouse;

· azat opened on Apr 23, 2025

Initial completion support for clickhouse-keeper-client

pr-improvementPull request with some product improvementsPull request with some product improvements

Status: Draft (not ready).

ClickHouse/ClickHousenumber 78151

#78151 In ClickHouse/ClickHouse;

· azat opened on Mar 23, 2025