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https://issues.apache.org/jira/browse/HADOOP-2762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy updated HADOOP-2762:
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Status: Open (was: Patch Available)
Amareshwari, do you mind adding some illustrative examples for the
HADOOP_*_OPTS? For e.g. how to set up it so that NameNode/JobTracker have
higher memory limits than Datanode/TaskTracker.
> Better documentation of controls for memory limits on hadoop daemons and
> Map-Reduce tasks
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-2762
> URL: https://issues.apache.org/jira/browse/HADOOP-2762
> Project: Hadoop Core
> Issue Type: Improvement
> Components: documentation, mapred, scripts
> Affects Versions: 0.16.0
> Reporter: Arun C Murthy
> Assignee: Amareshwari Sriramadasu
> Priority: Blocker
> Fix For: 0.18.0
>
> Attachments: patch-2762.txt
>
>
> We have had a spate of questions about memory usage of hadoop daemons and
> Map-Reduce jobs and how to configure them.
> We should better document *mapred.child.java.opts* in the Map-Reduce tutorial
> and cluser_setup.html and link to
> http://hadoop.apache.org/core/docs/r0.15.3/cluster_setup.html#Configuring+the+Environment+of+the+Hadoop+Daemons.
>
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