[YARN-3425] NPE from RMNodeLabelsManager.serviceStop when NodeLabelsManager.serviceInit failed

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1, 2.7.6
• Component/s: resourcemanager

Environment

1 RM, 1 NM , 1 NN , I DN

• Assignee: Bibin Chundatt
• Reporter: Bibin Chundatt
• Created: 31/Mar/15 20:20
• Updated: 20/Dec/17 20:06
• Resolved: 01/Apr/15 17:17

Description

Configure yarn.node-labels.enabled to true
and yarn.node-labels.fs-store.root-dir /node-labels
Start resource manager without starting DN/NM

2015-03-31 16:44:13,782 WARN org.apache.hadoop.service.AbstractService: When stopping the service org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager : java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager.stopDispatcher(CommonNodeLabelsManager.java:261)
at org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager.serviceStop(CommonNodeLabelsManager.java:267)
at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
at org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
at org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:171)
at org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceInit(ResourceManager.java:556)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createAndInitActiveServices(ResourceManager.java:984)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:251)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1207)

 protected void stopDispatcher() {
    AsyncDispatcher asyncDispatcher = (AsyncDispatcher) dispatcher;
       asyncDispatcher.stop(); 
  }

Null check missing during stop

Issue Links

• duplicates: YARN-4539 CommonNodeLabelsManager throw NullPointerException when the fairScheduler init failed
• relates to: YARN-6632 Backport YARN-3425 to branch 2.7