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From "Tsz Wo (Nicholas), SZE (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2919) Add method(s) to FSDatasetInterface for checking if the scanners are supported
Date Wed, 08 Feb 2012 23:33:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HDFS-2919:
-----------------------------------------

    Description: 
DataNode currently checks the class of DataNode.data to determine whether it supports DirectoryScanner
and/or DataBlockScanner.  It is better to have some method(s) in FSDatasetInterface to reveal
this information.

    
> Add method(s) to FSDatasetInterface for checking if the scanners are supported
> ------------------------------------------------------------------------------
>
>                 Key: HDFS-2919
>                 URL: https://issues.apache.org/jira/browse/HDFS-2919
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: data-node
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>
> DataNode currently checks the class of DataNode.data to determine whether it supports
DirectoryScanner and/or DataBlockScanner.  It is better to have some method(s) in FSDatasetInterface
to reveal this information.

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