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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10323) Allow users to do a dryrun of distcp
Date Tue, 04 Feb 2014 02:54:09 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HADOOP-10323:
-------------------------------

    Attachment: HADOOP-10323.000.patch

Preliminary patch to demonstrate the idea. The patch just simply starts the same MR jobs but
does not do any real data copying/modification.

We can provide more information after the dryrun. Also, we may also want to check the checksum
type of the source files during the dryrun.

> Allow users to do a dryrun of distcp
> ------------------------------------
>
>                 Key: HADOOP-10323
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10323
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: tools/distcp
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HADOOP-10323.000.patch
>
>
> This jira plans to add a dryrun option in distcp which will make distcp go through all
the steps except the real data copying. In this way, users can quickly understand potential
issues.



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