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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6898) DN must reserve space for a full block when an RBW block is created
Date Fri, 05 Sep 2014 23:27:28 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Nauroth updated HDFS-6898:
--------------------------------
    Hadoop Flags: Reviewed

+1 for the patch.  Thanks again, Arpit.

> DN must reserve space for a full block when an RBW block is created
> -------------------------------------------------------------------
>
>                 Key: HDFS-6898
>                 URL: https://issues.apache.org/jira/browse/HDFS-6898
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.5.0
>            Reporter: Gopal V
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-6898.01.patch, HDFS-6898.03.patch, HDFS-6898.04.patch, HDFS-6898.05.patch,
HDFS-6898.06.patch
>
>
> DN will successfully create two RBW blocks on the same volume even if the free space
is sufficient for just one full block.
> One or both block writers may subsequently get a DiskOutOfSpace exception. This can be
avoided by allocating space up front.



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