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https://issues.apache.org/jira/browse/HADOOP-3437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12599331#action_12599331
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Steve Loughran commented on HADOOP-3437:
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I should add that this is a change since 0.16.3; so "local" used to be valid. A
new default value/comment string is probably appropriate
> mapred.job.tracker default value/docs appear out of sync with code
> ------------------------------------------------------------------
>
> Key: HADOOP-3437
> URL: https://issues.apache.org/jira/browse/HADOOP-3437
> Project: Hadoop Core
> Issue Type: Bug
> Components: conf
> Affects Versions: 0.18.0
> Reporter: Steve Loughran
> Priority: Minor
>
> This is the settings for mapred.job.tracker in SVN_HEAD. If you dont override
> these, you get a RuntimeException
> <property>
> <name>mapred.job.tracker</name>
> <value>local</value>
> <description>The host and port that the MapReduce job tracker runs
> at. If "local", then jobs are run in-process as a single map
> and reduce task.
> </description>
> </property>
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