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Flaky test: KinesisFaultToleranceTest.test_supervisorRecovers_afterSuspendResume_withEmptyShards #20433
Description
This issue was generated automatically by Claude Code (Anthropic's AI coding agent) running a scheduled CI-triage routine on behalf of @FrankChen021. Analysis and suggested fixes are AI-produced; please verify before acting on them.
Status: Open: no fix PR
Subject: KinesisFaultToleranceTest.test_supervisorRecovers_afterSuspendResume_withEmptyShards (embedded-tests, unit tests (25, K*,U*,Z*,Y*,X*))
Failures: 2 · First seen: 2026-09-23 · Last seen: 2026-10-08
Root cause
StreamIndexTestBase.verifyRowCount gates on waitForAllSegmentsToBeAvailable, which counts Broker schema-refresh metrics. That count can be reached before the handed-off segments are queryable, and the suspend has already dropped the realtime segments, so COUNT(*) returned 2001 instead of 3000.
Suggested fix
Switch verifyRowCount to EmbeddedClusterApis.waitForAllSegmentsToBeQueryable (added in #20319), or poll COUNT(*) until it matches.
Occurrences
Failed push-triggered master jobs only. The daily triage routine adds one row per new failed job.
| Date | Commit | Job | Failure log | Detail | Reported in |
|---|---|---|---|---|---|
| 2026-09-23 | a379ea8 (#20397) | unit tests (25, K*,U*,Z*,Y*,X*) |
job 107010233701 | COUNT(*) 2001 vs expected 3000; 1/1 attempt |
#20414 |
| 2026-10-08 | 51b66c7 (#20516) | unit tests / unit tests(main) (25, K*,U*,Z*,Y*,X*) / test-jdk25-[K*,U*,Z*,Y*,X*] |
job 113291222476 | COUNT(*) 2001 vs expected 3000 in verifyAndTearDown; 1/1 attempt |
Activity
FrankChen021 commentedon Oct 9, 2026
Failed again on 2026-10-08: 51b66c7 job 113291222476,
COUNT(*)2001 vs expected 3000 (1/1 attempt).