CI flake - restart index test collects 0 subscription updates instead of 1 on Windows #6391

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1. clockwork-labs-bot commented on Oct 27, 2026

   

   clockwork-labs-bot

   on Oct 27, 2026

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   Symptoms and root cause

   • Exact failure: run 40425660382, attempt 1, job 121933650132 — Smoketests (Windows 4/4), head 287090eebc4850a71cc273ee2304d2b7f60539d8.
   • standalone::restart::test_add_remove_index_after_restart failed at restart.rs:176: Expected 1 update from subscription, actual 0, expected 1. The test had restarted the server, published the indexed module, and successfully subscribed to its join query. The initial subscription snapshot was empty; the anonymous add call then completed, but collecting the background subscription yielded no updates. This is the primary failure, not the downstream Tests failed wrapper. No timeout or cancellation occurred.
   • Attempt 2, job 121956452222, succeeded.
   • The supported symptom is a missing collected join-subscription update after restart/index addition. Whether this is a subscription/test-harness race or a server delivery bug is not established by this log.

   Duplicate selection

   Open-only searches covered the exact test name, add_remove_index, Expected 1 update, restart/subscription, and subscription/index flake terms. No supported specific open match was found. #5851 concerns missing C# quickstart output; #6125 requires multiple RLS rules. Neither matches this restart/index test's operation and diagnostic closely enough to group. No closed tickets were searched or inspected.

   Proposed operations

   DRY RUN — proposals only; no triage changes applied.

   • Keep this ticket open; no duplicate closure proposed.
   • Proposed title: CI flake - restart index test collects 0 subscription updates instead of 1 on Windows — replaces the job-oriented title with the observed failure without claiming an unproven cause.
   • Proposed team: Core — runtime subscription correctness or its source-code test harness, rather than an observed infrastructure/setup failure.
2. clockwork-labs-bot

   changed the title [-]CI flake: Smoketests (Windows 4/4) / standalone::restart::test_add_remove_index_after_restart[/-] on Oct 27, 2026