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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10313) Distcp does not check the order of snapshot names passed to -diff
Date Wed, 20 Apr 2016 19:51:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250582#comment-15250582

Jing Zhao commented on HDFS-10313:

bq. the old behavior is that we fallback to regular distcp if sync failed, my suggested change
would change the old behavior so no fallback would happen, I believe it's safer, do you agree?

Yes, agree. Let's return some error msg here.

> Distcp does not check the order of snapshot names passed to -diff
> -----------------------------------------------------------------
>                 Key: HDFS-10313
>                 URL: https://issues.apache.org/jira/browse/HDFS-10313
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: distcp
>            Reporter: Yongjun Zhang
>            Assignee: Lin Yiqun
>         Attachments: HDFS-10313.001.patch
> This jira is to propose adding a check to distcp, when {{-diff s1 s2}} is passed, we
need to ensure that s2 is newer than s1, otherwise, abort with a informative error message.
> This is the result of my offline discussion with [~jingzhao] on HDFS-9820. Thanks Jing.

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