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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12726) Unsupported operations should throw UnsupportedOperationException
Date Thu, 21 Jan 2016 13:22:39 GMT
Daniel Templeton created HADOOP-12726:
-----------------------------------------

             Summary: Unsupported 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


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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