[
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.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.
