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From "Senthil Subramanian (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1532) Distcp should support verification modes
Date Wed, 27 Jun 2007 18:03:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12508605
] 

Senthil Subramanian commented on HADOOP-1532:
---------------------------------------------

Looked at HADOOP-1134 and also discussed with Milind about DFS improvements that are going
to be in 0.14. Neither "verify long" nor "verify quick" would be needed once we are on 0.14.

> Distcp should support verification modes
> ----------------------------------------
>
>                 Key: HADOOP-1532
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1532
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: util
>            Reporter: Senthil Subramanian
>             Fix For: 0.14.0
>
>
> distcp doesnot currently support any verification after copying files. It should support

> 1. verify quick (vq) mode - which compares the source and destination CRCs
> 2. verify long (vl) mode - which in addition to verify quick should read the entire destination
file to catch DFS block level errors

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