[jira] Updated: (MAPREDUCE-1510) RAID should regenerate parity files if they get deleted

["Rodrigo Schmidt (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1510?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rodrigo Schmidt updated MAPREDUCE-1510:
---------------------------------------

    Attachment: MAPREDUCE-1510.patch

This patch should cover this and fix the unit test.

> RAID should regenerate parity files if they get deleted
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-1510
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1510
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/raid
>            Reporter: Rodrigo Schmidt
>            Assignee: Rodrigo Schmidt
>         Attachments: MAPREDUCE-1510.patch
>
>
> Currently, if a source file has a replication factor lower or equal to that expected by RAID, the file is skipped and no parity file is generated. I don't think this is a good behavior since parity files can get wrongly deleted, leaving the source file with a low replication factor. In that case, raid should be able to recreate the parity file.

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