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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1111) getCorruptFiles() should give some hint that the list is not complete
Date Fri, 25 Jun 2010 02:18:51 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12882427#action_12882427
] 

Konstantin Shvachko commented on HDFS-1111:
-------------------------------------------

Rodrigo, do I understand correctly that in the case you describe the output will be empty
list, because everything will be filtered out (same as bafore), and "A FEW" will indicate
that more corrupt files are somwhere in the system? It does not seem very informative or user
friendly to me. What do you think?

> I just created HDFS-1265 for that.

I think it is better to come to some general idea how things should work before creating jiras.
May be you will decide to fix the problem here. BTW, do you plan to complete this new jira?

> getCorruptFiles() should give some hint that the list is not complete
> ---------------------------------------------------------------------
>
>                 Key: HDFS-1111
>                 URL: https://issues.apache.org/jira/browse/HDFS-1111
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Rodrigo Schmidt
>            Assignee: Rodrigo Schmidt
>         Attachments: HADFS-1111.0.patch
>
>
> If the list of corruptfiles returned by the namenode doesn't say anything if the number
of corrupted files is larger than the call output limit (which means the list is not complete).
There should be a way to hint incompleteness to clients.
> A simple hack would be to add an extra entry to the array returned with the value null.
Clients could interpret this as a sign that there are other corrupt files in the system.
> We should also do some rephrasing of the fsck output to make it more confident when the
list is not complete and less confident when the list is known to be incomplete.

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