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From "Sriram Rao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-1111) getCorruptFiles() should give some hint that the list is not complete
Date Fri, 06 Aug 2010 19:59:21 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sriram Rao updated HDFS-1111:
-----------------------------

    Status: Patch Available  (was: Open)

Attached is a patch that addresses the issues pointed to by Konstantin.

This patch also includes the CLI change (the change to DFsck) to allow a user to list-corruptfileblocks
<path> and get back the full list of files with the missing block info.

This patch is for Yahoo Hadoop-20.

> 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, HDFS-1111-y20.1.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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