[Failing Test]: org.apache.beam.runners.dataflow.worker.StreamingDataflowWorkerTest.testMaxThreadMetric

[Abacn]

What happened?

Java PreCommit highly flaky (>50%) due to this test. Happens on both Jenkins and GitHub Action.

Either [0: [streamingEngine=false]] or [1: [streamingEngine=true]]

java.lang.AssertionError: expected:<1000> but was:<0>
	at org.junit.Assert.fail(Assert.java:89)
	at org.junit.Assert.failNotEquals(Assert.java:835)
	at org.junit.Assert.assertEquals(Assert.java:647)
	at org.junit.Assert.assertEquals(Assert.java:633)
	at org.apache.beam.runners.dataflow.worker.StreamingDataflowWorkerTest.testMaxThreadMetric(StreamingDataflowWorkerTest.java:2935)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.apache.beam.runners.dataflow.worker.StreamingDataflowWorkerTest$BlockingFn$1.evaluate(StreamingDataflowWorkerTest.java:909)

Issue Failure

Failure: Test is flaky

Issue Priority

Priority: 1 (unhealthy code / failing or flaky postcommit so we cannot be sure the product is healthy)

Issue Components

• Component: Python SDK
• Component: Java SDK
• Component: Go SDK
• Component: Typescript SDK
• Component: IO connector
• Component: Beam examples
• Component: Beam playground
• Component: Beam katas
• Component: Website
• Component: Spark Runner
• Component: Flink Runner
• Component: Samza Runner
• Component: Twister2 Runner
• Component: Hazelcast Jet Runner
• Component: Google Cloud Dataflow Runner

[damccorm]

I think this is fixed at this point (if not will get picked up by the tooling)