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Thomas Graves commented on MAPREDUCE-3126: ------------------------------------------ I didn't see any reference to lost/removed nodes in the RM log. Looking at the other logs to see if I can get anymore useful info on this. > mr job stuck because reducers using all slots and mapper isn't scheduled > ------------------------------------------------------------------------ > > Key: MAPREDUCE-3126 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3126 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Affects Versions: 0.23.0 > Reporter: Thomas Graves > Priority: Blocker > Fix For: 0.23.0 > > > The command in MAPREDUCE-3124 run and this job got hung with 1 Map task > waiting for resources and 7 Reducers running (2 waiting). The mapper got > scheduler, then AM scheduled the reducers, the map task failed and tried to > start a new attempt but reducers were using all the slots. > I will try to add some more info from the logs. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira