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Gour Saha commented on YARN-8350: --------------------------------- Thanks [~billie.rinaldi] for reviewing the patch. The missing space between "%s" and "in" is deliberate. I wrote a comment above the code to explain - {code} // Note: %sin is not a typo. Constraint name is optional so the error messages // below handle that scenario by adding a space if name is specified. {code} > NPE in service AM related to placement policy > --------------------------------------------- > > Key: YARN-8350 > URL: https://issues.apache.org/jira/browse/YARN-8350 > Project: Hadoop YARN > Issue Type: Bug > Components: yarn-native-services > Reporter: Billie Rinaldi > Assignee: Gour Saha > Priority: Critical > Attachments: YARN-8350.01.patch, YARN-8350.02.patch > > > It seems like this NPE is happening in a service with more than one component > when one component has a placement policy and the other does not. It causes > the AM to crash. > {noformat} > java.lang.NullPointerException > at > org.apache.hadoop.yarn.service.component.Component.requestContainers(Component.java:644) > at > org.apache.hadoop.yarn.service.component.Component$FlexComponentTransition.transition(Component.java:310) > at > org.apache.hadoop.yarn.service.component.Component$FlexComponentTransition.transition(Component.java:293) > at > org.apache.hadoop.yarn.state.StateMachineFactory$MultipleInternalArc.doTransition(StateMachineFactory.java:385) > at > org.apache.hadoop.yarn.state.StateMachineFactory.doTransition(StateMachineFactory.java:302) > at > org.apache.hadoop.yarn.state.StateMachineFactory.access$500(StateMachineFactory.java:46) > at > org.apache.hadoop.yarn.state.StateMachineFactory$InternalStateMachine.doTransition(StateMachineFactory.java:487) > at > org.apache.hadoop.yarn.service.component.Component.handle(Component.java:919) > at > org.apache.hadoop.yarn.service.ServiceScheduler.serviceStart(ServiceScheduler.java:344) > at > org.apache.hadoop.service.AbstractService.start(AbstractService.java:194) > at > org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121) > at > org.apache.hadoop.yarn.service.ServiceMaster.lambda$serviceStart$0(ServiceMaster.java:253) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1682) > at > org.apache.hadoop.yarn.service.ServiceMaster.serviceStart(ServiceMaster.java:251) > at > org.apache.hadoop.service.AbstractService.start(AbstractService.java:194) > at > org.apache.hadoop.yarn.service.ServiceMaster.main(ServiceMaster.java:317) > {noformat} -- 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