Vincent Behar created MAPREDUCE-4849: ----------------------------------------
Summary: TaskSelector not used in FairScheduler Key: MAPREDUCE-4849 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4849 Project: Hadoop Map/Reduce Issue Type: Bug Components: contrib/fair-share Affects Versions: 1.1.1, 1.0.4 Reporter: Vincent Behar The documentation (http://hadoop.apache.org/docs/r1.0.4/fair_scheduler.html) describes the mapred.fairscheduler.taskselector parameter as an "extension point", but while the FairScheduler does instantiate the custom TaskSelector provided this way, it does not call any of its methods (obtainNewMapTask, obtainNewReduceTask, neededSpeculativeMaps or neededSpeculativeReduces). We should either update the FairScheduler to use the TaskSelector when scheduling a task, or completely remove the TaskSelector and update the documentation. -- 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