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Amol Kekre commented on MAPREDUCE-3353: --------------------------------------- Not sure why this jira is marked critical. This only impacts if a node goes bad during AM life span right? If so given 3 attempts by MR, how important this jira (Major?). > Need a RM->AM channel to inform AMs about faulty/unhealthy/lost nodes > --------------------------------------------------------------------- > > Key: MAPREDUCE-3353 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3353 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: applicationmaster, mrv2, resourcemanager > Affects Versions: 0.23.0 > Reporter: Vinod Kumar Vavilapalli > Assignee: Bikas Saha > Priority: Critical > Fix For: 0.23.2 > > Attachments: MAPREDUCE-3353-branch-0.23.patch, > MAPREDUCE-3353-branch-0.23.patch, MAPREDUCE-3353-branch-0.23.patch > > > When a node gets lost or turns faulty, AM needs to know about that event so > that it can take some action like for e.g. re-executing map tasks whose > intermediate output live on that faulty node. -- 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