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https://issues.apache.org/jira/browse/HDFS-717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773353#action_12773353
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Tsz Wo (Nicholas), SZE commented on HDFS-717:
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>> Throw java.io.InterruptedIOException instead of InterruptedException.
> We thought of InterruptedException to capture interrupts to any thread and
> not just threads busy with IO.
Do you mean that a server thread is interrupted by some reason and then the
server side InterruptedException is forwarded to the client? This sounds like
a system problem.
I was considering the case that the a client is waiting for a blocking IO (e.g.
waiting for server reply) and the client thread is interrupted. In such case,
InterruptedIOException should be used.
> Proposal for exceptions thrown by FileContext and Abstract File System
> ----------------------------------------------------------------------
>
> Key: HDFS-717
> URL: https://issues.apache.org/jira/browse/HDFS-717
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Jitendra Nath Pandey
> Assignee: Jitendra Nath Pandey
> Fix For: 0.22.0
>
>
> Currently the APIs in FileContext throw only IOException. Going forward these
> APIs will throw more specific exceptions.
> This jira proposes following hierarchy of exceptions to be thrown by
> FileContext and AFS (Abstract File System) classes.
> InterruptedException (java.lang.InterruptedException)
> IOException
> /* Following exceptions extend IOException */
> FileNotFoundException
> FileAlreadyExistsException
> DirectoryNotEmptyException
> NotDirectoryException
> AccessDeniedException
> IsDirectoryException
> InvalidPathNameException
>
> FileSystemException
> /* Following exceptions extend
> FileSystemException */
> FileSystemNotReadyException
> ReadOnlyFileSystemException
> QuotaExceededException
> OutOfSpaceException
> RemoteException (java.rmi.RemoteException)
> Most of the IOExceptions above are caused by invalid user input, while
> FileSystemException is thrown when FS is in such a state that the requested
> operation cannot proceed.
> Please note that the proposed RemoteException is from standard java rmi
> package, which also extends IOException.
>
> HDFS throws many exceptions which are not in the above list. The DFSClient
> will unwrap the exceptions thrown by HDFS, and any exception not in the above
> list will be thrown as IOException or FileSystemException.
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