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roachprod: prometheus node_exporter may crash due to concurrent map read/write

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

T-testengTestEng TeamTestEng Team

Status: Open.

#160527 In cockroachdb/cockroach;

· srosenberg opened on Jan 6, 2026

roachtest: sysbench/.../cpu=8/... is underprovisioned

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

T-testengTestEng TeamTestEng Team

Status: Open.

#160521 In cockroachdb/cockroach;

· srosenberg opened on Jan 6, 2026

roachtest: decouple 75-sec profiled run from <code>runTPCC</code>

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

T-testengTestEng TeamTestEng Team

Status: Open.

#160519 In cockroachdb/cockroach;

· srosenberg opened on Jan 6, 2026

roachtest: mismatch between StoreCount and MetamorphicVolumeType

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

C-bugCode not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.Code not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.

T-testengTestEng TeamTestEng Team

Status: Open.

#160518 In cockroachdb/cockroach;

· srosenberg opened on Jan 6, 2026

sql: investigate failure in TestDistSQLReceiverDrainsMeta with shared process mode

A-multitenancyRelated to multi-tenancyRelated to multi-tenancy

C-investigationFurther steps needed to qualify. C-label will change.Further steps needed to qualify. C-label will change.

T-sql-queriesSQL Queries TeamSQL Queries Team

Status: Open.

#160517 In cockroachdb/cockroach;

· yuzefovich opened on Jan 5, 2026

roachtest/mixedversion: <code>refreshServiceData</code> can deadlock (or time out) during cluster upgrade

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

T-testengTestEng TeamTestEng Team

Status: Open.

#160516 In cockroachdb/cockroach;

· srosenberg opened on Jan 5, 2026

roachtest: disable all jepsen tests in IBM

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

branch-release-26.1Used to mark GA and release blockers, technical advisories, and bugs for 26.1Used to mark GA and release blockers, technical advisories, and bugs for 26.1

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

E-quick-winLikely to be a quick win for someone experienced.Likely to be a quick win for someone experienced.

T-testengTestEng TeamTestEng Team

Status: Open.

#160500 In cockroachdb/cockroach;

· srosenberg opened on Jan 5, 2026

roachtest/mixedversion: version-upgrade must not hardcode n1 in "maybe run backup" user hook

branch-masterFailures and bugs on the master branch.Failures and bugs on the master branch.

C-bugCode not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.Code not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.

T-testengTestEng TeamTestEng Team

Status: Open.

#160498 In cockroachdb/cockroach;

· srosenberg opened on Jan 5, 2026

Add changefeed roachtest reproducing slow SHOW CHANGEFEED JOBS

A-cdcChange Data CaptureChange Data Capture

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

T-cdc

Status: Open.

Task

#160483 In cockroachdb/cockroach;

· log-head opened on Jan 5, 2026

Sentry: datum.go:5323: comparison of two different versions of enum USER DEFINED ENUM: × oid 100352: versions 257 and 221, gist "" (1) assertion failure Wraps: (2) attached stack trace -- stack tra...

branch-release-25.4Used to mark GA and release blockers and technical advisories for 25.4Used to mark GA and release blockers and technical advisories for 25.4

C-bugCode not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.Code not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.

O-sentryOriginated from an in-the-wild panic report.Originated from an in-the-wild panic report.

T-sql-foundationsSQL Foundations Team (formerly SQL Schema + SQL Sessions)SQL Foundations Team (formerly SQL Schema + SQL Sessions)

X-blathers-triagedblathers was able to find an ownerblathers was able to find an owner

Status: Open.

#160482 In cockroachdb/cockroach;

· cockroach-sentry opened on Jan 5, 2026

tsdb: double counting of kv metrics

C-bugCode not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.Code not up to spec/doc, specs & docs deemed correct. Solution expected to change code/behavior.

T-observability

Status: Open.

#160479 In cockroachdb/cockroach;

· angles-n-daemons opened on Jan 5, 2026

sql/backfill: parallelize work for distributed merge during index backfill

C-enhancementSolution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)Solution expected to add code/behavior + preserve backward-compat (pg compat issues are exception)

T-sql-foundationsSQL Foundations Team (formerly SQL Schema + SQL Sessions)SQL Foundations Team (formerly SQL Schema + SQL Sessions)

Status: Open.

#160478 In cockroachdb/cockroach;

· spilchen opened on Jan 5, 2026