[ https://issues.apache.org/jira/browse/YARN-3260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Naganarasimha G R reassigned YARN-3260: --------------------------------------- Assignee: Naganarasimha G R > NPE if AM attempts to register before RM processes launch event > --------------------------------------------------------------- > > Key: YARN-3260 > URL: https://issues.apache.org/jira/browse/YARN-3260 > Project: Hadoop YARN > Issue Type: Bug > Components: resourcemanager > Affects Versions: 2.6.0 > Reporter: Jason Lowe > Assignee: Naganarasimha G R > > The RM on one of our clusters was running behind on processing > AsyncDispatcher events, and this caused AMs to fail to register due to an > NPE. The AM was launched and attempting to register before the > RMAppAttemptImpl had processed the LAUNCHED event, and the client to AM token > had not been generated yet. The NPE occurred because the > ApplicationMasterService tried to encode the missing token. -- This message was sent by Atlassian JIRA (v6.3.4#6332)