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https://issues.apache.org/jira/browse/MAPREDUCE-1491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833511#action_12833511
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Hadoop QA commented on MAPREDUCE-1491:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12435804/MAPREDUCE-1491.0.patch
against trunk revision 909799.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 7 new or modified tests.
-1 patch. The patch command could not apply the patch.
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/322/console
This message is automatically generated.
> Use HAR filesystem to merge parity files
> -----------------------------------------
>
> Key: MAPREDUCE-1491
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1491
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Rodrigo Schmidt
> Assignee: Rodrigo Schmidt
> Attachments: MAPREDUCE-1491.0.patch
>
>
> The HDFS raid implementation (HDFS-503) creates a parity file for every file
> that is RAIDed. This puts additional burden on the memory requirements of the
> namenode. It will be nice if the parity files are combined together using
> the HadoopArchive (har) format.
> This was (HDFS-684) before, but raid migrated to MAPREDUCE.
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