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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12726) Unsupported FS operations should throw UnsupportedOperationException
Date Tue, 23 Aug 2016 21:28:21 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15433644#comment-15433644
] 

Daniel Templeton commented on HADOOP-12726:
-------------------------------------------

Thanks, [~chris.douglas] and [~steve_l]!

> 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
>             Fix For: 3.0.0-alpha1
>
>         Attachments: HADOOP-12726.001.patch, HADOOP-12726.002.patch, HADOOP-12726.003.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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