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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2681) NullPointerException in TaskRunner.java when system property "hadoop.log.dir" is not set
Date Fri, 11 Apr 2008 16:22:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12588014#action_12588014
] 

Edward J. Yoon commented on HADOOP-2681:
----------------------------------------

Oh, i have a this issue in my internal projects.
Is this fixed (or known) ?


> NullPointerException in TaskRunner.java when system property "hadoop.log.dir" is not
set
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2681
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2681
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.15.2
>            Reporter: Xu Zhang
>            Priority: Minor
>
> Currently, NullPointerException exception is thrown on line 321 in TaskRunner.java when
system property "hadoop.log.dir" is not set.  Instead of a NullPointerException exception,
I expected a default value for "hadoop.log.dir" to be used, or to see a more meaningful error
message that could have helped me figure out what was wrong (like, telling me that I needed
to set "hadoop.log.dir" and how to do so).
> Here is one instance of such exceptions:
> WARN mapred.TaskRunner: task_200801181719_0001_m_000000_0 Child Error
> java.lang.NullPointerException
> 	at java.io.File.<init>(File.java:222)
> 	at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:321)

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