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Posted to common-issues@hadoop.apache.org by "Daniel Templeton (JIRA)" <ji...@apache.org> on 2016/01/21 14:22:39 UTC

[jira] [Created] (HADOOP-12726) Unsupported operations should throw UnsupportedOperationException

Daniel Templeton created HADOOP-12726:
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             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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