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clickhouse-keeper eats up the disk space by infinite writing to /var/log/syslog

potential bugTo be reviewed by developers and confirmed/rejected.To be reviewed by developers and confirmed/rejected.

Status: Open.

#101444 In ClickHouse/ClickHouse;

· sweihub opened on Apr 1, 2026

MemorySanitizer (STID: 1290-1eae)

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

sanitizer

testingSpecial issue with list of bugs found by CISpecial issue with list of bugs found by CI

Status: Open.

#101436 In ClickHouse/ClickHouse;

· kssenii opened on Mar 31, 2026

PR's notEquals(x, getDefault()) breaks for Nullable types because getDefault() returns NULL

Status: Open.

#101433 In ClickHouse/ClickHouse;

· clickgapai opened on Mar 31, 2026

Vector similarity index: support the dot product

easy taskGood for first contributorsGood for first contributors

feature

Status: Open.

#101431 In ClickHouse/ClickHouse;

· rschu1ze opened on Mar 31, 2026

forward compatibility 26.3 -> 26.2 JSON / propagate_types_serialization_versions_to_nested_types

unexpected behaviourResult is unexpected, but not entirely wrong at the same time.Result is unexpected, but not entirely wrong at the same time.

Status: Open.

#101429 In ClickHouse/ClickHouse;

· den-crane opened on Mar 31, 2026

Logical error: Cannot push block to port which already has data (STID: 3295-2608)

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

testingSpecial issue with list of bugs found by CISpecial issue with list of bugs found by CI

Status: Open.

#101424 In ClickHouse/ClickHouse;

· nihalzp opened on Mar 31, 2026

GRANT SELECT(column) does not give access to its subcolumns

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

comp-rbacAuthorization: roles, grants, quotas, row-level security, access checks.Authorization: roles, grants, quotas, row-level security, access checks.

Status: Open.

#101423 In ClickHouse/ClickHouse;

· rienath opened on Mar 31, 2026

Runtime filter crash on Tuple(Variant(...), ...) join key — incomplete fix for nested Variant

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

Status: Open.

#101415 In ClickHouse/ClickHouse;

· clickgapai opened on Mar 31, 2026

timeSeriesPredictLinearToGrid loses predict_offset parameter in state type, crashing on AggregatingMergeTree FINAL

Status: Open.

#101407 In ClickHouse/ClickHouse;

· clickgapai opened on Mar 31, 2026

Bad group by + order by result with query_plan_execute_functions_after_sorting=0

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

Status: Open.

#101402 In ClickHouse/ClickHouse;

· PedroTadim opened on Mar 31, 2026

Hung check failed, possible deadlock found

fuzzProblem found by one of the fuzzersProblem found by one of the fuzzers

testingSpecial issue with list of bugs found by CISpecial issue with list of bugs found by CI

Status: Open.

#101383 In ClickHouse/ClickHouse;

· nickitat opened on Mar 31, 2026

Bad join result with query_plan_split_filter disabled

bugConfirmed user-visible misbehaviour in official releaseConfirmed user-visible misbehaviour in official release

Status: Open.

#101380 In ClickHouse/ClickHouse;

· PedroTadim opened on Mar 31, 2026