[jira] Created: (HADOOP-2998) Calling DFSClient.close() should not throw IOException.

[Tsz Wo (Nicholas), SZE (JIRA)]

Calling DFSClient.close() should not throw IOException.
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                 Key: HADOOP-2998
                 URL: https://issues.apache.org/jira/browse/HADOOP-2998
             Project: Hadoop Core
          Issue Type: Bug
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


In Java, if a stream is opened, it can be closed for more than one times 
without any exception.  For example,
{code}
OutputStream out = ...;
...
out.close();
out.close(); //no exception thrown here
{code}

So, DFSClient.close() should also do the same.

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