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Harsh J commented on MAPREDUCE-482: ----------------------------------- I wonder if this makes sense to do in the ShuffleHandler today in MR2, or if it is already done. It would fit in with the event/transition model used in other places and does sound like a good idea. > Each shuffle should proceed as a DFA > ------------------------------------ > > Key: MAPREDUCE-482 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-482 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Reporter: Devaraj Das > Priority: Minor > > The shuffle code (for fetching map outputs) should proceed as a DFA. The > states (as Owen had mentioned on HADOOP-1183) are (INITIAL, LOCATED, > FETCHING, DONE, FAILED). This is to ensure correctness of map output fetching. -- 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