[ https://issues.apache.org/jira/browse/MAPREDUCE-4865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsuyoshi OZAWA updated MAPREDUCE-4865: -------------------------------------- Attachment: 0003-Changed-Mappers-and-Reducers-to-support-Node-level-aggregation-20130116.patch Rebased the change on the trunk version of 15th Jan. > Launching node-level combiner at the end stage of MapTask and ignoring > aggregated inputs at ReduceTask > ------------------------------------------------------------------------------------------------------ > > Key: MAPREDUCE-4865 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-4865 > Project: Hadoop Map/Reduce > Issue Type: Sub-task > Components: tasktracker > Affects Versions: 3.0.0 > Reporter: Tsuyoshi OZAWA > Assignee: Tsuyoshi OZAWA > Attachments: > 0003-Changed-Mappers-and-Reducers-to-support-Node-level-aggregation-20130116.patch, > 0004-Changed-Mappers-and-Reducers-to-support-Node-level-a.patch > > > MapTask needs to start node-level aggregation against local outputs at the > end stage of MapTask after calling getAggregationTargets(). > This feature is implemented with Merger and CombinerRunner. -- 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