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From "Sumit Mohanty (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-3448) Ensure valid default values are used for mapred config properties
Date Thu, 03 Oct 2013 22:50:42 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-3448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13785625#comment-13785625
] 

Sumit Mohanty commented on AMBARI-3448:
---------------------------------------

LGTM, +1.

> 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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