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Fix ClusterInfoServiceIT#testMaxQueueLatenciesInClusterInfo #136461

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Merged
merged 4 commits into from
Oct 14, 2025
+6 −3
Merged

Fix ClusterInfoServiceIT#testMaxQueueLatenciesInClusterInfo #136461

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b08ec09
Fix ClusterInfoServiceIT#testMaxQueueLatenciesInClusterInfo
nicktindall Oct 13, 2025
51cae70
Merge branch 'main' into fix_ClusterInfoServiceIT_testMaxQueueLatenci…
nicktindall Oct 13, 2025
2ec6995
Add comment explaining why we poll the thread pool active threads
nicktindall Oct 13, 2025
34ced01
Merge branch 'main' into fix_ClusterInfoServiceIT_testMaxQueueLatenci…
nicktindall Oct 13, 2025
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3 changes: 0 additions & 3 deletions muted-tests.yml
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Expand Up @@ -441,9 +441,6 @@ tests:
- class: org.elasticsearch.action.admin.cluster.state.TransportClusterStateActionTests
method: testGetClusterStateWithDefaultProjectOnly
issue: https://github.com/elastic/elasticsearch/issues/134450
- class: org.elasticsearch.cluster.ClusterInfoServiceIT
method: testMaxQueueLatenciesInClusterInfo
issue: https://github.com/elastic/elasticsearch/issues/134500
- class: org.elasticsearch.xpack.esql.expression.function.scalar.score.DecayTests
method: "testEvaluateBlockWithNulls {TestCase=<date_nanos>, <date_nanos>, <time_duration>, <_source> #11}"
issue: https://github.com/elastic/elasticsearch/issues/134509
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2 changes: 2 additions & 0 deletions server/src/internalClusterTest/java/org/elasticsearch/cluster/ClusterInfoServiceIT.java
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Expand Up @@ -514,6 +514,8 @@ public void testMaxQueueLatenciesInClusterInfo() throws Exception {
threadsToJoin[i].join();
}
Arrays.stream(threadsToJoin).forEach(thread -> assertFalse(thread.isAlive()));
// Wait for the write executor to go idle
assertBusy(() -> assertThat(trackingWriteExecutor.getActiveCount(), equalTo(0)));
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@nicktindall nicktindall Oct 13, 2025 •
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I don't know if this could still have a very rare race condition where we get a zero inbetween the tasks being executed, but given that the write pool defaults to # of cores, it seems unlikely we'd go to 0 active, then to non-zero again as we drain the queue.

I'm not sure if there's a more satisfying approach to knowing when the work is all done.

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Should we add this as a comment and then link the existing test failure in case the test fails again in X weeks for the reason mentioned above?

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Done in 2ec6995


assertThat(
"Unexpectedly found a task queued for the write thread pool. Write thread pool dump: " + trackingWriteExecutor,
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