8.15. YARN Known Issues

  • BUG-35942: Users must manually configure ZooKeeper security with ResourceManager High Availability.

  • BUG-27604: After upgrade from 2.1 of Highly Available system, ResourceManager fails to elect a master.

    Problem: After upgrading an HA system from HDP 2.2 from HDP 2.1, you must manually clear the ResourceManager state store as part of the upgrade or the following error message will occur:

    Exception transitioning to active   PERMISSIONS=All users are allowed
    2014-11-12 05:36:04,941 WARN  ha.ActiveStandbyElector 
    (ActiveStandbyElector.java:becomeActive(809)) - Exception handling the 
    winning of election
    org.apache.hadoop.ha.ServiceFailedException: RM could not transition to 
    Active at org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.

    Workaround: Manually clear the ResourceManager state store:

    1. Run:

      yarn resourcemanager -format-state-store
    2. Start the ResourceManager:

      su -l yarn -c "/usr/hdp/current/hadoop-yarn-
      resourcemanager/sbin/yarn-daemon.sh start resourcemanager"