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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2017/04/25 18:15:04 UTC

[jira] [Commented] (HADOOP-9844) NPE when trying to create an error message response of RPC

    [ https://issues.apache.org/jira/browse/HADOOP-9844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15983376#comment-15983376 ] 

Steve Loughran commented on HADOOP-9844:
----------------------------------------

I've just updated this; most of the changes are obsolete and cut. the main thing that's needed is just to make sure that in a couple of places, Exception.toString() is used to guarantee there si always a meaningful exception text in the logs/further up the stack chain

> NPE when trying to create an error message response of RPC
> ----------------------------------------------------------
>
>                 Key: HADOOP-9844
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9844
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 2.7.1, 3.0.0-alpha1
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>         Attachments: HADOOP-9844-001.patch, HADOOP-9844-002.patch
>
>
> I'm seeing an NPE which is raised when the server is trying to create an error response to send back to the caller and there is no error text.
> The root cause is probably somewhere in SASL, but sending something back to the caller would seem preferable to NPE-ing server-side.



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