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Dmytro Molkov commented on MAPREDUCE-1354: ------------------------------------------ Is there any particular reason that only getTaskCompletionEvents dropped the synchronized modifier, but all other job access methods like getCleanupTaskReports, getSetupTaskReports, etc are still syncrhonized, while effectively they are doing a very similar kind of access? > Incremental enhancements to the JobTracker for better scalability > ----------------------------------------------------------------- > > Key: MAPREDUCE-1354 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1354 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: jobtracker > Reporter: Devaraj Das > Assignee: Dick King > Priority: Critical > Attachments: mapreduce-1354--2010-03-10.patch, > mapreduce-1354--2010-05-13.patch, MAPREDUCE-1354_yhadoop20.patch, > MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, > MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, > MAPREDUCE-1354_yhadoop20.patch, MAPREDUCE-1354_yhadoop20.patch, > mr-1354-y20.patch > > > It'd be nice to have the JobTracker object not be locked while accessing the > HDFS for reading the jobconf file and while writing the jobinfo file in the > submitJob method. We should see if we can avoid taking the lock altogether. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.