MR-279: Performance improvement in running Uber MapTasks --------------------------------------------------------
Key: MAPREDUCE-2787 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2787 Project: Hadoop Map/Reduce Issue Type: Improvement Components: mrv2 Reporter: Ahmed Radwan Assignee: Ahmed Radwan The runUberMapTasks() in org.apache.hadoop.mapred.UberTask obtains the local fileSystem and local job configuration for every task attempt. This will have a negative performance impact. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira