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https://issues.apache.org/jira/browse/AMBARI-3448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siddharth Wagle updated AMBARI-3448:
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Attachment: AMBARI-3448.patch
> Ensure valid default values are used for mapred config properties
> -----------------------------------------------------------------
>
> Key: AMBARI-3448
> URL: https://issues.apache.org/jira/browse/AMBARI-3448
> Project: Ambari
> Issue Type: Bug
> Components: controller
> Affects Versions: 1.4.1
> Reporter: Siddharth Wagle
> Assignee: Siddharth Wagle
> Fix For: 1.4.1
>
> Attachments: AMBARI-3448.patch
>
>
> To summarize, the following config properties probably need different default
> values. For Ambari, we are assuming the target to be a single node cluster
> with 4GB RAM.
> Default for a fresh HDP 2 install:
> "mapreduce.map.sort.spill.percent" : "0.1"
> "mapreduce.task.io.sort.mb" : "200"
> "mapreduce.map.java.opts" : "-Xmx320m"
> "mapreduce.map.memory.mb" : "1536"
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