[RATIS-1791] Intermittent failure in ServerRestartTests#testRestartFollower

• Type: Test
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0, 2.5.0
• Component/s: test
• Assignee: Kaijie Chen
• Reporter: Kaijie Chen
• Created: 24/Feb/23 03:22
• Updated: 27/Apr/23 17:37
• Resolved: 24/Feb/23 20:04

Description

Failure log from CI:

https://github.com/apache/ratis/actions/runs/4237331430/jobs/7363182990#step:5:572

Error:  Tests run: 5, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 46.786 s <<< FAILURE! - in org.apache.ratis.server.simulation.TestServerRestartWithSimulatedRpc
Error:  testRestartFollower(org.apache.ratis.server.simulation.TestServerRestartWithSimulatedRpc)  Time elapsed: 7.141 s  <<< FAILURE!
java.lang.AssertionError: expected:<39> but was:<42>
        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.ratis.server.ServerRestartTests.assertTruncatedLog(ServerRestartTests.java:169)
        at org.apache.ratis.server.ServerRestartTests.runTestRestartFollower(ServerRestartTests.java:132)
        at org.apache.ratis.server.impl.MiniRaftCluster$Factory$Get.runWithNewCluster(MiniRaftCluster.java:141)
        at org.apache.ratis.server.impl.MiniRaftCluster$Factory$Get.runWithNewCluster(MiniRaftCluster.java:121)
        at org.apache.ratis.server.ServerRestartTests.testRestartFollower(ServerRestartTests.java:88)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
        at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.lang.Thread.run(Thread.java:829)

Occasionally, failures caused by a different reason:

Error:  Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 9.972 s <<< FAILURE! - in org.apache.ratis.server.simulation.TestServerRestartWithSimulatedRpc
Error:  testRestartFollower(org.apache.ratis.server.simulation.TestServerRestartWithSimulatedRpc)  Time elapsed: 9.878 s  <<< FAILURE!
java.lang.AssertionError: expected:<38> but was:<39>
	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.ratis.server.ServerRestartTests.assertTruncatedLog(ServerRestartTests.java:171)
	at org.apache.ratis.server.ServerRestartTests.runTestRestartFollower(ServerRestartTests.java:135)
	at org.apache.ratis.server.impl.MiniRaftCluster$Factory$Get.runWithNewCluster(MiniRaftCluster.java:141)
	at org.apache.ratis.server.impl.MiniRaftCluster$Factory$Get.runWithNewCluster(MiniRaftCluster.java:121)
	at org.apache.ratis.server.ServerRestartTests.testRestartFollower(ServerRestartTests.java:88)

Issue Links

• links to: GitHub Pull Request #827