[ https://issues.apache.org/jira/browse/MAPREDUCE-967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Todd Lipcon updated MAPREDUCE-967: ---------------------------------- Attachment: mapreduce-967.txt Fixed patch - the previous one worked with a slightly old version of the common patch it depended on. Apologies for not re-running the tests locally before submitting to Hudson yesterday. Ran the tests on this fixed patch overnight and looked good here - will resubmit to Hudson to confirm. > TaskTracker does not need to fully unjar job jars > ------------------------------------------------- > > Key: MAPREDUCE-967 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-967 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: tasktracker > Affects Versions: 0.21.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Attachments: mapreduce-967-branch-0.20.txt, mapreduce-967.txt, > mapreduce-967.txt, mapreduce-967.txt, mapreduce-967.txt, mapreduce-967.txt, > mapreduce-967.txt > > > In practice we have seen some users submitting job jars that consist of > 10,000+ classes. Unpacking these jars into mapred.local.dir and then cleaning > up after them has a significant cost (both in wall clock and in unnecessary > heavy disk utilization). This cost can be easily avoided -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.