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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12178) NPE during handling of SASL setup if problem with SASL resolver class
Date Mon, 26 Oct 2015 20:13:28 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14974938#comment-14974938
] 

Steve Loughran commented on HADOOP-12178:
-----------------------------------------

I'm happy with being robustly paranoid here. We have hit problems with nothing resembling
a stack trace to track this down, and getting this patch in should be enough to stop that
hitting anyone else.

> NPE during handling of SASL setup if problem with SASL resolver class
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-12178
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12178
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 2.7.1
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>         Attachments: HADOOP-12178-001.patch
>
>
> If there's any problem in the constructor of {{SaslRpcClient}}, then IPC Client throws
an NPE rather than forwarding the stack trace. This is because the exception handler assumes
that {{saslRpcClient}} is not null, that the exception is related to the SASL setup itself.
> The exception handler needs to check for {{saslRpcClient}} being null, and if so, rethrow
the exception



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