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https://issues.apache.org/jira/browse/MAPREDUCE-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12838902#action_12838902
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Owen O'Malley commented on MAPREDUCE-1502:
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I haven't looked at the patch, but you should be careful when pushing access to
non-distributed servers into the cluster. In particular, you probably want an
upper bound on the number of maps....
> Sqoop should run mysqldump in a mapper as opposed to a user-side process
> ------------------------------------------------------------------------
>
> Key: MAPREDUCE-1502
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1502
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: contrib/sqoop
> Reporter: Aaron Kimball
> Assignee: Aaron Kimball
> Attachments: MAPREDUCE-1502.patch
>
>
> Sqoop currently runs mysqldump ("direct import mode") in the local user
> process with a single thread. Better system performance and reliability could
> be achieved by running this in a parallel set of mapper tasks.
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