[ https://issues.apache.org/jira/browse/MAPREDUCE-5059?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Omkar Vinit Joshi updated MAPREDUCE-5059: ----------------------------------------- Attachment: MAPREDUCE-5059-20130410.patch > Job overview shows average merge time larger than for any reduce attempt > ------------------------------------------------------------------------ > > Key: MAPREDUCE-5059 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-5059 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: jobhistoryserver, webapps > Reporter: Jason Lowe > Assignee: Omkar Vinit Joshi > Attachments: MAPREDUCE-5059-20130325.patch, > MAPREDUCE-5059-20130410.patch > > > When looking at a job overview page on the history server, the Average Merge > Time is often reported with a value that is far larger than the Elapsed Merge > Time shown for any reduce task attempt. The job overview page calculates the > merge time as the time delta between the sort finishing and the job launching > while the attempts page calculates it as the time delta between the sort > finishing and the shuffle finishing. -- 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