[BUG] org.opensearch.discovery.ec2.AmazonEC2DiscoveryClientYamlTestSuiteIT.test {yaml=discovery_ec2/10_basic/All nodes are correctly discovered} is flaky

[reta]

Describe the bug

The test case org.opensearch.discovery.ec2.AmazonEC2DiscoveryClientYamlTestSuiteIT.test {yaml=discovery_ec2/10_basic/All nodes are correctly discovered} is flaky:

java.lang.AssertionError: Failure at [discovery_ec2/10_basic:15]: _nodes.total didn't match expected value:
                  _nodes.total: expected Integer [3] but was Integer [2]

	at __randomizedtesting.SeedInfo.seed([27D0724F0579495C:AF844D95AB8524A4]:0)
	at org.opensearch.test.rest.yaml.OpenSearchClientYamlSuiteTestCase.executeSection(OpenSearchClientYamlSuiteTestCase.java:460)
	at org.opensearch.test.rest.yaml.OpenSearchClientYamlSuiteTestCase.test(OpenSearchClientYamlSuiteTestCase.java:433)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:938)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:974)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:988)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:48)
	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$1.evaluate(TestRuleMarkFailure.java:44)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
	at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:947)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:832)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:883)
	at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:894)
	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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
	at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.AssertionError: _nodes.total didn't match expected value:
                  _nodes.total: expected Integer [3] but was Integer [2]

	at org.opensearch.test.rest.yaml.section.MatchAssertion.doAssert(MatchAssertion.java:115)
	at org.opensearch.test.rest.yaml.section.Assertion.execute(Assertion.java:89)
	at org.opensearch.test.rest.yaml.OpenSearchClientYamlSuiteTestCase.executeSection(OpenSearchClientYamlSuiteTestCase.java:449)
	... 39 more

Related component

Plugins

To Reproduce

: ./gradlew ':plugins:discovery-ec2:qa:amazon-ec2:yamlRestTestKeyStore' --tests "org.opensearch.discovery.ec2.AmazonEC2DiscoveryClientYamlTestSuiteIT.test {yaml=discovery_ec2/10_basic/All nodes are correctly discovered}" -Dtests.seed=27D0724F0579495C 

Expected behavior

The test must always pass

Additional Details

Plugins
Standard

Screenshots
If applicable, add screenshots to help explain your problem.

Host/Environment (please complete the following information):

• CI

Additional context

• https://build.ci.opensearch.org/job/gradle-check/37232/consoleFull

[peternied]

[Triage - attendees 1 2 3 4 5 6 7 8]
@reta Thanks for creating this issue.