[
https://issues.apache.org/jira/browse/HBASE-11562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14069784#comment-14069784
]
Hadoop QA commented on HBASE-11562:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12657044/HBASE-11562-v0-trunk.patch
against trunk revision .
ATTACHMENT ID: 12657044
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/10142//console
This message is automatically generated.
> CopyTable should provide an option to shuffle the mapper tasks
> --------------------------------------------------------------
>
> Key: HBASE-11562
> URL: https://issues.apache.org/jira/browse/HBASE-11562
> Project: HBase
> Issue Type: Bug
> Components: mapreduce
> Affects Versions: 0.99.0, 0.94.20, 0.98.4
> Reporter: Jean-Marc Spaggiari
> Assignee: Jean-Marc Spaggiari
> Attachments: HBASE-11562-v0-trunk.patch
>
>
> When doing a copy table from a table with a lot of regions to a table to way
> less regions, on a cluster with limited number of mappers, since map tasks
> are ordered by key, tasks will first run for the few first regions and will
> hotspot a single region server on the destination side.
> To avoid this, we should submit the map tasks in a random order.
> This JIRA is to add this option to CopyTable and TableInputFormat
--
This message was sent by Atlassian JIRA
(v6.2#6252)
