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https://issues.apache.org/jira/browse/HADOOP-3438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12599370#action_12599370
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Devaraj Das commented on HADOOP-3438:
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Do you really want to disable logging in the JT? There are other things like
the link in the Job webUi to do with jobconf won't work as well. To maintain
correctness, we should check for null in all those places.
> NPE if job tracker started and system property hadoop.log.dir is not set
> ------------------------------------------------------------------------
>
> Key: HADOOP-3438
> URL: https://issues.apache.org/jira/browse/HADOOP-3438
> Project: Hadoop Core
> Issue Type: Bug
> Components: metrics
> Affects Versions: 0.18.0
> Environment: amd64 ubuntu, jrockit 1.6
> Reporter: Steve Loughran
>
> This is a regression. If the system property "hadoop.log.dir" is not set, the
> job tracker NPEs rather than starts up.
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