[ https://issues.apache.org/jira/browse/MAPREDUCE-2239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Scott Chen updated MAPREDUCE-2239: ---------------------------------- Status: Patch Available (was: Open) > BlockPlacementPolicyRaid should call getBlockLocations only when necessary > -------------------------------------------------------------------------- > > Key: MAPREDUCE-2239 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-2239 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: contrib/raid > Affects Versions: 0.23.0 > Reporter: Scott Chen > Assignee: Scott Chen > Fix For: 0.23.0 > > Attachments: MAPREDUCE-2239-1.txt, MAPREDUCE-2239-2.txt, > MAPREDUCE-2239.txt > > > Currently BlockPlacementPolicyRaid calls getBlockLocations for every > chooseTarget(). > This puts pressure on NameNode. We should avoid calling if this file is not > raided or a parity file. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.