[jira] [Resolved] (HADOOP-2681) NullPointerException in TaskRunner.java when system property "hadoop.log.dir" is not set

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-2681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer resolved HADOOP-2681.
--------------------------------------

    Resolution: Duplicate

Closing this as a duplicate of HADOOP-3438.

> 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 Common
>          Issue Type: Bug
>          Components: conf
>    Affects Versions: 0.15.2
>            Reporter: Xu Zhang
>            Priority: Minor
>              Labels: newbie
>
> 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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