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https://issues.apache.org/jira/browse/HADOOP-9062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ganeshan Iyer updated HADOOP-9062:
----------------------------------

    Attachment: HADOOP-9062.1-win.001.patch

Attaching patch that appends the values instead of overwriting.
                
> hadoop-env.cmd overwrites the value of *_OPTS set before install
> ----------------------------------------------------------------
>
>                 Key: HADOOP-9062
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9062
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 1-win
>         Environment: Windows
>            Reporter: Ganeshan Iyer
>             Fix For: 1-win
>
>         Attachments: HADOOP-9062.1-win.001.patch
>
>
> The values of the following environment variables are overwritten in the 
> hadoop-env.cmd file. 
> HADOOP_NAMENODE_OPTS
> HADOOP_SECONDARYNAMENODE_OPTS
> HADOOP_DATANODE_OPTS
> HADOOP_BALANCER_OPTS
> HADOOP_JOBTRACKER_OPTS
> HADOOP_TASKTRACKER_OPTS
> This blocks us from using these variables for setting other properties. 

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