[YARN-6420] RM startup failure due to wrong order in nodelabel editlog

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha4, 2.8.2
• Hadoop Flags: Reviewed
• Assignee: Bibin Chundatt
• Reporter: Bibin Chundatt
• Created: 31/Mar/17 08:31
• Updated: 07/Jun/17 21:40
• Resolved: 05/Apr/17 04:22

Description

Edit log file for nodelabel written in wrong order if StoreNewClusterNodeLabels addition is delayed and UpdateNodeToLabelsMappingsEvent is added to dispatcher.

Configure RM admin client thread count to 2
Add node label to cluster X - Client 1
Delay event addition to dispatcher
Replace node label on node1 to X - Client 2
Make sure UpdateNodeToLabelsMappingsEvent added to dispatcher first.
Restart resource manager

2017-03-31 16:20:42,236 | WARN  | main-EventThread | Exception handling the winning of election | ActiveStandbyElector.java:836
org.apache.hadoop.ha.ServiceFailedException: RM could not transition to Active
        at org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.becomeActive(EmbeddedElectorService.java:128)
        at org.apache.hadoop.ha.ActiveStandbyElector.becomeActive(ActiveStandbyElector.java:832)
        at org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:422)
        at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:728)
        at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:600)
Caused by: org.apache.hadoop.ha.ServiceFailedException: Error when transitioning to Active mode
        at org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToActive(AdminService.java:331)
        at org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.becomeActive(EmbeddedElectorService.java:126)
        ... 4 more
Caused by: org.apache.hadoop.service.ServiceStateException: java.io.IOException: Not all labels being replaced contained by known label collections, please check, new labels=[1]
        at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
        at org.apache.hadoop.service.AbstractService.start(AbstractService.java:204)
        at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:642)
        at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:1042)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1083)
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:1079)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)