[jira] Commented: (HADOOP-6686) Remove redundant exception class name in unwrapped exceptions thrown at the RPC client

["Suresh Srinivas (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-6686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854217#action_12854217 ] 

Suresh Srinivas commented on HADOOP-6686:
-----------------------------------------

RPC server sends exception class name and printed stack trace in response. Proposed change:

# if the exception is unwrapped, with the message set to the first line of printed stack trace from response. The message is "<Server exception class name>: <server exception message>"
#* While unwrapping, I propose removing the redundant "<exception class name>: " from the message. Other than HDFSCli test I cannot think of a reason why an application depends on the error string to include exception name, especially given that the exception type that is thrown has that information already.
#. if the exception is not unwrapped, RemoteException is thrown as it is, with printed stack trace as the message.
#* This behavior will be retained. The exception name here along with the stack trace (albeit the server side) is useful for debugging.

> Remove redundant exception class name in unwrapped exceptions thrown at the RPC client
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-6686
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6686
>             Project: Hadoop Common
>          Issue Type: Improvement
>         Environment: At RPC client, when the exception thrown by the server is unwrapped, the exception message includes redundant exception class name. This redundant information should be removed.
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>             Fix For: 0.22.0
>
>


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