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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1068) Improve error message for 0 datanode case
Date Thu, 15 Mar 2007 20:39:09 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12481302
] 

Owen O'Malley commented on HADOOP-1068:
---------------------------------------

Your message is an improvement, but I would still prefer a special case for 0 datanodes, since
that is a case that can easily happen if the cluster is misconfigured.

> Improve error message for 0 datanode case
> -----------------------------------------
>
>                 Key: HADOOP-1068
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1068
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.12.0
>            Reporter: Owen O'Malley
>         Assigned To: dhruba borthakur
>             Fix For: 0.13.0
>
>         Attachments: fewdatanodeswarning.patch
>
>
> A user got the error message:
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: failed to create
> file /user/root/rand-input/part000000 on client localhost.localdomain
> because target-length is 0, below MIN_REPLICATION (1)
> A better error message for 0 targets would be something like:
> The cluster has no datanodes for creating file /user/root/rand-input/part000000.

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