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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12726) Unsupported FS operations should throw UnsupportedOperationException
Date Mon, 21 Mar 2016 21:42:26 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Templeton updated HADOOP-12726:
--------------------------------------
    Attachment: HADOOP-12726.001.patch

Here's a first pass at the change.  I didn't see any test code that tests the unsupportedness
of any method calls.

> Unsupported FS operations should throw UnsupportedOperationException
> --------------------------------------------------------------------
>
>                 Key: HADOOP-12726
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12726
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.7.1
>            Reporter: Daniel Templeton
>            Assignee: Daniel Templeton
>         Attachments: HADOOP-12726.001.patch
>
>
> In the {{FileSystem}} implementation classes, unsupported operations throw {{new IOException("Not
supported")}}, which makes it needlessly difficult to distinguish an actual error from an
unsupported operation.  They should instead throw {{new UnsupportedOperationException()}}.
> It's possible that this anti-idiom is used elsewhere in the code base.  This JIRA should
include finding and cleaning up those instances as well.



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