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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-582) Create a fsckraid tool to verify the consistency of erasure codes for HDFS-503
Date Tue, 06 Oct 2009 07:40:31 GMT

     [ https://issues.apache.org/jira/browse/HDFS-582?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

dhruba borthakur updated HDFS-582:
----------------------------------

    Component/s: contrib/raid

A better option (as advised by Raghu via HDFS-503) is to expose a new APi from the NN that
lists missing blocks. The RaidNode can use this API (periodically) to fetch the list of missing
blocks and fix them from the parity blocks. 

> Create a fsckraid tool to verify the consistency of erasure codes for HDFS-503
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-582
>                 URL: https://issues.apache.org/jira/browse/HDFS-582
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: contrib/raid
>            Reporter: Rodrigo Schmidt
>            Assignee: Rodrigo Schmidt
>
> HDFS-503 should also have a tool to test the consistency of the parity files generated,
so that data corruption can be detected and treated.

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