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From "Ravi Gummadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1621) Streaming's TextOutputReader.getLastOutput throws NPE if it has never read any output
Date Fri, 16 Jul 2010 10:55:50 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889127#action_12889127
] 

Ravi Gummadi commented on MAPREDUCE-1621:
-----------------------------------------

Patch looks good.
+1

> Streaming's TextOutputReader.getLastOutput throws NPE if it has never read any output
> -------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1621
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1621
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/streaming
>    Affects Versions: 0.21.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.22.0
>
>         Attachments: patch-1621.txt
>
>
> If TextOutputReader.readKeyValue() has never successfully read a line, then its bytes
member will be left null. Thus when logging a task failure, PipeMapRed.getContext() can trigger
an NPE when it calls outReader_.getLastOutput().

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