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Jingxuan Fu commented on HADOOP-18362: -------------------------------------- I commited a pr to trunk. Can assign this issue to me? > Running org.apache.hadoop.ha.TestZKFailoverController when > "hadoop.security.groups.cache.secs" is zero or negative numbers will throw > ambiguous exception > --------------------------------------------------------------------------------------------------------------------------------------------------------- > > Key: HADOOP-18362 > URL: https://issues.apache.org/jira/browse/HADOOP-18362 > Project: Hadoop Common > Issue Type: Bug > Affects Versions: 2.10.2 > Environment: Linux version 4.15.0-142-generic > (buildd@lgw01-amd64-039) (gcc version 5.4.0 20160609 (Ubuntu > 5.4.0-6ubuntu1~16.04.12)) > Reporter: Jingxuan Fu > Assignee: Jingxuan Fu > Priority: Major > Labels: pull-request-available > Time Spent: 3h 20m > Remaining Estimate: 0h > > {quote} > {code:java} > <property> > <name>hadoop.security.groups.cache.secs</name> > <value>300</value> > <description> > This is the config controlling the validity of the entries in the cache > containing the user->group mapping. When this duration has expired, > then the implementation of the group mapping provider is invoked to get > the groups of the user and then cached back. > </description> > </property>{code} > {quote} > As we see in core-default.xml of hadoop.security.groups.cache.secs, the > default value is 300. But when we set it to zero or negative number and then > run > org.apache.hadoop.ha.TestZKFailoverController#testGracefulFailoverMultipleZKfcs, > it will throw NullPointerException as below: > {quote} > {code:java} > [INFO] Running org.apache.hadoop.ha.TestZKFailoverController > [ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.932 > s <<< FAILURE! - in org.apache.hadoop.ha.TestZKFailoverController > [ERROR] > testGracefulFailoverMultipleZKfcs(org.apache.hadoop.ha.TestZKFailoverController) > Time elapsed: 0.799 s <<< ERROR! > java.lang.NullPointerException > at > org.apache.hadoop.ha.ZKFailoverController.run(ZKFailoverController.java:188) > at > org.apache.hadoop.ha.MiniZKFCCluster.start(MiniZKFCCluster.java:116) > at > org.apache.hadoop.ha.TestZKFailoverController.testGracefulFailoverMultipleZKfcs(TestZKFailoverController.java:581) > 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$1.runReflectiveCall(FrameworkMethod.java:59) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) > at > org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) > at > org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) > at > org.apache.zookeeper.JUnit4ZKTestRunner$LoggedInvokeMethod.evaluate(JUnit4ZKTestRunner.java:55) > 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.rules.TestWatchman$1.evaluate(TestWatchman.java:53) > at > org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299) > at > org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at java.lang.Thread.run(Thread.java:748){code} > {quote} > -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org