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https://issues.apache.org/jira/browse/IMPALA-14628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18045065#comment-18045065
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Quanlong Huang commented on IMPALA-14628:
-----------------------------------------
This might be an issue of enabling hierarchical event processing by default.
Assigning this to [~VenuReddy] first.
CC [~hemanth619]
> testDisableEventSyncFlag failed due to greatestSyncedEventTime !=
> lastSyncedEventTime
> -------------------------------------------------------------------------------------
>
> Key: IMPALA-14628
> URL: https://issues.apache.org/jira/browse/IMPALA-14628
> Project: IMPALA
> Issue Type: Bug
> Reporter: Quanlong Huang
> Assignee: Venugopal Reddy K
> Priority: Critical
>
> FE test MetastoreEventsProcessorTest.testDisableEventSyncFlag is flaky. Here
> is an error in a downstream run:
> {noformat}
> java.lang.AssertionError: expected:<1765626451> but was:<1765626452>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:645)
> at org.junit.Assert.assertEquals(Assert.java:631)
> at
> org.apache.impala.catalog.events.SynchronousHMSEventProcessorForTests.verifyEventSyncedMetrics(SynchronousHMSEventProcessorForTests.java:78)
> at
> org.apache.impala.catalog.events.SynchronousHMSEventProcessorForTests.processEvents(SynchronousHMSEventProcessorForTests.java:53)
> at
> org.apache.impala.catalog.events.MetastoreEventsProcessorTest.testDDLOpUsingEvent(MetastoreEventsProcessorTest.java:2291)
> at
> org.apache.impala.catalog.events.MetastoreEventsProcessorTest.runDDLTestsWithFlags(MetastoreEventsProcessorTest.java:2145)
> at
> org.apache.impala.catalog.events.MetastoreEventsProcessorTest.testDisableEventSyncFlag(MetastoreEventsProcessorTest.java:2091)
> 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:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:316)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:240)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:214)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:155)
> at
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:385)
> at
> org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:162)
> at
> org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:507)
> at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:495){noformat}
> The failed assertion is "greatestSyncedEventTime == lastSyncedEventTime" in
> the following code:
> {code}
> Assert.assertEquals(greatestSyncedEventId, lastSyncedEventId);
> Assert.assertEquals(greatestSyncedEventTime, lastSyncedEventTime); // failed
> here{code}
> https://github.com/apache/impala/blob/9d112dae23870b6729473047da94f1bc0ea89ceb/fe/src/test/java/org/apache/impala/catalog/events/SynchronousHMSEventProcessorForTests.java#L78
> This means the event ids are identical but the event time are different.
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