[CI] RestClusterInfoActionCancellationIT testGetIndicesCancellation failing

[iverase]

Build scan:
https://gradle-enterprise.elastic.co/s/yigjrvzadco3g/tests/:qa:smoke-test-http:javaRestTest/org.elasticsearch.http.RestClusterInfoActionCancellationIT/testGetIndicesCancellation

Reproduction line:
gradlew ':qa:smoke-test-http:javaRestTest' --tests "org.elasticsearch.http.RestClusterInfoActionCancellationIT.testGetIndicesCancellation" -Dtests.seed=5F940444C5042635 -Dtests.locale=zh-SG -Dtests.timezone=Pacific/Easter -Druntime.java=18

Applicable branches:
8.3

Reproduces locally?:
No

Failure history:
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.http.RestClusterInfoActionCancellationIT&tests.test=testGetIndicesCancellation

Failure excerpt:

junit.framework.AssertionFailedError: found no cancellable tasks

  at junit.framework.Assert.fail(Assert.java:57)
  at junit.framework.Assert.assertTrue(Assert.java:22)
  at junit.framework.TestCase.assertTrue(TestCase.java:192)
  at org.elasticsearch.test.TaskAssertions.lambda$assertAllCancellableTasksAreCancelled$2(TaskAssertions.java:62)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1098)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1071)
  at org.elasticsearch.test.TaskAssertions.assertAllCancellableTasksAreCancelled(TaskAssertions.java:47)
  at org.elasticsearch.http.RestClusterInfoActionCancellationIT.runTest(RestClusterInfoActionCancellationIT.java:81)
  at org.elasticsearch.http.RestClusterInfoActionCancellationIT.testGetIndicesCancellation(RestClusterInfoActionCancellationIT.java:48)
  at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
  at java.lang.reflect.Method.invoke(Method.java:577)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)
  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:375)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:824)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:475)
  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:375)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:831)
  at java.lang.Thread.run(Thread.java:833)

[elasticsearchmachine]

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

[pxsalehi]

This is a rather new test that exists since 2.5 months, and it has ever failed only twice on the same day! Since I cannot reproduce it or figure out why it fails, I'll increase the timeout and log level and wait and see when will it happen again.

[pxsalehi]

I double checked this with @original-brownbear and he agrees that there is not much to do for this failure other than increasing the timeout, which was done a few weeks ago. We can just leave this open until next week and then close it if there are no new failures.