cockroach

Run a single CockroachDB roachtest end-to-end: pick local vs. user's GCE worker, launch detached on worker via tmux + `roachstress.sh` with long-poll done-notification and tail. Use whenever user asks to run/stress/kick off a roachtest, or just modified one and next step is running it. Single test + single iteration only; nightly loops belong elsewhere.

Analyze DRT cluster health for a given time range. Reconstructs the operations timeline, checks CockroachDB metrics (availability, latency, storage, changefeeds, jobs, goroutines, admission control, LSM, KV prober) and logs for anomalies, correlates findings with disruptive operations to distinguish expected side-effects from real bugs. Use when asked to "analyze DRT", "check cluster health", "what happened on the DRT cluster", "DRT health report", investigate DRT issues, or review DRT operations. Also use when the user mentions a DRT cluster name (drt-scale, drt-chaos, drt-large, etc.) in the context of health or operations.

Skip a flaky or broken test with proper issue tracking. Use when asked to skip a test, disable a test, or mark a test as flaky.

Use when downloading test logs, artifacts, or outputs.zip from EngFlow build invocations. Use when investigating CockroachDB CI test failures hosted on mesolite.cluster.engflow.com.

Migrate React components from Redux + Saga to SWR hooks. Use when converting data fetching from Redux store (reducers, sagas, selectors, connect HOC) to SWR-based hooks in CockroachDB DB Console or cluster-ui.

Bump cluster-ui package version after a release branch cut. Creates two PRs — one to drop the prerelease suffix on the release branch and one to increment the minor version on master.

Use when filing, creating, or reporting GitHub issues for CockroachDB. Use when asked to open a bug report, feature request, investigation issue, or performance inquiry. Also use when the user mentions wanting to track a problem, report a regression, or document unexpected behavior in CockroachDB.

Review code changes or PRs for quality, correctness, and reviewability. Use when asked to "review", "check", "provide feedback", or "post a review". Dispatches specialized agents in parallel for thorough analysis.

Automates visual regression testing for DB Console UI changes. Compares screenshots and network requests between the current branch and its merge base using roachprod, playwright-cli, and ImageMagick. Use when the user wants to verify UI changes haven't introduced visual or behavioral regressions.

Use when adding, removing, or modifying columns/indexes on system tables. Provides a checklist covering schema definitions, migrations, version gates, golden files, and test hashes.

Expert system for investigating MMA (Multi-Metric Allocator) behavior on CockroachDB clusters. Helps oncall engineers diagnose load imbalances, understand rebalancing decisions, and identify why MMA did or didn't act.

Help create git commits and PRs with properly formatted messages and release notes following CockroachDB conventions. Use when committing changes or creating pull requests.

Help backport PRs to release branches using the backport CLI tool. Use when backporting changes that have merge conflicts requiring manual resolution.

Convert React class components to functional components with hooks

Reduce an unoptimized-query-oracle test failure log to the simplest possible reproduction case. Use when you have unoptimized-query-oracle*.log files from a failed roachtest and need to find the minimal SQL to reproduce the bug.