[CI] ComponentTemplateMetadataTests testConcurrentEquals failing

[ywangd]

The error is [LEAK: resource was not cleaned up before it was garbage-collected. Therefore I suspect this particular test method is just a victim of some other underlying issue. Since the LeakTracker is maintained by the distributed team, I am tagging this issue as distributed. Please re-route if it is incorrect.

Build scan:
https://gradle-enterprise.elastic.co/s/4y4kajgt634cy/tests/:server:test/org.elasticsearch.cluster.metadata.ComponentTemplateMetadataTests/testConcurrentEquals

Reproduction line:
./gradlew ':server:test' --tests "org.elasticsearch.cluster.metadata.ComponentTemplateMetadataTests.testConcurrentEquals" -Dtests.seed=867D16F1B66224AC -Dtests.locale=hr-HR -Dtests.timezone=America/Edmonton -Druntime.java=17

Applicable branches:
main

Reproduces locally?:
No

Failure history:
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.cluster.metadata.ComponentTemplateMetadataTests&tests.test=testConcurrentEquals

Failure excerpt:

java.lang.AssertionError: 
Expected: an empty collection
     but: <[LEAK: resource was not cleaned up before it was garbage-collected.
Recent access records: 
Created at:
	org.elasticsearch.common.util.MockPageCacheRecycler.wrap(MockPageCacheRecycler.java:32)
	org.elasticsearch.common.util.MockPageCacheRecycler.bytePage(MockPageCacheRecycler.java:72)
	org.elasticsearch.transport.BytesRefRecycler.obtain(BytesRefRecycler.java:27)
	org.elasticsearch.cluster.coordination.AbstractCoordinatorTestCase$ClearableRecycler.obtain(AbstractCoordinatorTestCase.java:1915)
	org.elasticsearch.common.io.stream.RecyclerBytesStreamOutput.ensureCapacityFromPosition(RecyclerBytesStreamOutput.java:232)
	org.elasticsearch.common.io.stream.RecyclerBytesStreamOutput.ensureCapacity(RecyclerBytesStreamOutput.java:223)
	org.elasticsearch.common.io.stream.RecyclerBytesStreamOutput.writeBytes(RecyclerBytesStreamOutput.java:77)
	org.elasticsearch.common.io.Streams$FlushOnCloseOutputStream.writeBytes(Streams.java:236)
	org.elasticsearch.common.io.stream.StreamOutput.write(StreamOutput.java:504)
	java.base/java.io.OutputStream.write(OutputStream.java:127)
	org.elasticsearch.common.compress.DeflateCompressor.threadLocalOutputStream(DeflateCompressor.java:169)
	org.elasticsearch.cluster.coordination.JoinValidationService.serializeClusterState(JoinValidationService.java:336)
	org.elasticsearch.cluster.coordination.JoinValidationService$JoinValidation.lambda$doRun$0(JoinValidationService.java:293)
	java.base/java.util.Objects.requireNonNullElseGet(Objects.java:308)
	org.elasticsearch.cluster.coordination.JoinValidationService$JoinValidation.doRun(JoinValidationService.java:293)
	org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:26)
	org.elasticsearch.cluster.coordination.JoinValidationService.processNextItem(JoinValidationService.java:230)
	org.elasticsearch.cluster.coordination.JoinValidationService$1.doRun(JoinValidationService.java:200)
	org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:26)
	org.elasticsearch.common.util.concurrent.DeterministicTaskQueue$3.run(DeterministicTaskQueue.java:531)
	org.elasticsearch.cluster.coordination.AbstractCoordinatorTestCase$Cluster$ClusterNode$2.run(AbstractCoordinatorTestCase.java:1380)
	org.elasticsearch.common.util.concurrent.DeterministicTaskQueue.runTask(DeterministicTaskQueue.java:135)
	org.elasticsearch.common.util.concurrent.DeterministicTaskQueue.runRandomTask(DeterministicTaskQueue.java:129)
	org.elasticsearch.cluster.coordination.AbstractCoordinatorTestCase$Cluster.runFor(AbstractCoordinatorTestCase.java:758)
	org.elasticsearch.cluster.coordination.AbstractCoordinatorTestCase$Cluster.stabilise(AbstractCoordinatorTestCase.java:559)
	org.elasticsearch.cluster.coordination.AbstractCoordinatorTestCase$Cluster.stabilise(AbstractCoordinatorTestCase.java:546)
	org.elasticsearch.cluster.coordination.AbstractCoordinatorTestCase$Cluster.addNodesAndStabilise(AbstractCoordinatorTestCase.java:329)
	org.elasticsearch.cluster.coordination.CoordinatorTests.testNodesJoinAfterStableCluster(CoordinatorTests.java:254)
	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.base/java.lang.reflect.Method.invoke(Method.java:568)
	com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
	com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
	com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
	com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)
	com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)
	org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
	org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
	org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
	org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
	com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
	com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
	com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
	com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
	com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
	com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
	com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
	org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
	com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
	com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
	com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
	com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
	org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
	org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
	org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
	org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
	com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
	com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
	java.base/java.lang.Thread.run(Thread.java:833)]>

  at __randomizedtesting.SeedInfo.seed([867D16F1B66224AC:F49026C08D7CC6E0]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.junit.Assert.assertThat(Assert.java:923)
  at org.elasticsearch.test.ESTestCase.checkStaticState(ESTestCase.java:673)
  at org.elasticsearch.test.ESTestCase.after(ESTestCase.java:464)
  at jdk.internal.reflect.GeneratedMethodAccessor34.invoke(null:-1)
  at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:568)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:1004)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
  at java.lang.Thread.run(Thread.java:833)

[elasticsearchmachine]

Pinging @elastic/es-distributed (Team:Distributed)

[DaveCTurner]

NB the leaked buffer was created in org.elasticsearch.cluster.coordination.CoordinatorTests.testNodesJoinAfterStableCluster so ComponentTemplateMetadataTests#testConcurrentEquals appears to be an innocent bystander. However I couldn't reproduce this by running testNodesJoinAfterStableCluster with the same seed. I'm running it in a loop now to see if that yields anything.