Disk io of shuffle phase may decrease if shuffled data not decompressed -----------------------------------------------------------------------
Key: MAPREDUCE-1891 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1891 Project: Hadoop Map/Reduce Issue Type: Improvement Components: tasktracker Reporter: Xiao Kang Current shuffled data is decompressed immediately. It may use much less memory for shuffle buffer if the data is not decompressed until merging to disk. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.