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lujie commented on YARN-7786: ----------------------------- [~jlowe]: I have update the patch: * fix some handy check-style error in other place. * Instead of "move TestApplicationMasterLauncher into the same package as the class it is testing", I bethink of your suggestion when I fixing the bug [YARN-7663|https://issues.apache.org/jira/browse/YARN-7663], i think it is also suitable. i.e. add protected method to catch the exception while launch, and check if the exception instanceof NullPointerException. > NullPointerException while launching ApplicationMaster > ------------------------------------------------------ > > Key: YARN-7786 > URL: https://issues.apache.org/jira/browse/YARN-7786 > Project: Hadoop YARN > Issue Type: Bug > Affects Versions: 3.0.0-beta1 > Reporter: lujie > Assignee: lujie > Priority: Minor > Attachments: YARN-7786.patch, YARN-7786_1.patch, YARN-7786_2.patch, > YARN-7786_3.patch, YARN-7786_4.patch, resourcemanager.log > > > Before launching the ApplicationMaster, send kill command to the job, then > some Null pointer appears: > {code} > 2017-11-25 21:27:25,333 INFO > org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher: Error > launching appattempt_1511616410268_0001_000001. Got exception: > java.lang.NullPointerException > at > org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.setupTokens(AMLauncher.java:205) > at > org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.createAMContainerLaunchContext(AMLauncher.java:193) > at > org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.launch(AMLauncher.java:112) > at > org.apache.hadoop.yarn.server.resourcemanager.amlauncher.AMLauncher.run(AMLauncher.java:304) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org