[ https://issues.apache.org/jira/browse/MAPREDUCE-5279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
PengZhang updated MAPREDUCE-5279: --------------------------------- Fix Version/s: trunk Status: Patch Available (was: Open) > mapreduce scheduling deadlock > ----------------------------- > > Key: MAPREDUCE-5279 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-5279 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2, scheduler > Affects Versions: 2.0.3-alpha > Reporter: PengZhang > Fix For: trunk > > Attachments: MAPREDUCE-5279.patch > > > YARN-2 imported cpu dimension scheduling, but MR RMContainerAllocator doesn't > take into account virtual cores while scheduling reduce tasks. > This may cause more reduce tasks to be scheduled because memory is enough. > And on a small cluster, this will end with deadlock, all running containers > are reduce tasks but map phase is not finished. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira