[jira] [Commented] (BIGTOP-1054) HADOOP_MAPRED_HOME is cumbersome

["Konstantin Boudnik (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BIGTOP-1054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13749503#comment-13749503 ] 

Konstantin Boudnik commented on BIGTOP-1054:
--------------------------------------------

bq. If the user is using "yarn" (the binary) we default HADOOP_MAPRED_HOME to the implementation of MR2 that we shipped with

What else one can use besides of the "yarn" ?
                
> HADOOP_MAPRED_HOME is cumbersome
> --------------------------------
>
>                 Key: BIGTOP-1054
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-1054
>             Project: Bigtop
>          Issue Type: Bug
>            Reporter: Philip Zeyliger
>
> Currently, to run "yarn jar myjob.jar" you have to set the following in hadoop-env.sh.
> {code}
> HADOOP_MAPRED_HOME=/usr/lib/hadoop-mapreduce
> {code}
> This is a bit annoying if you're dealing with multiple Hadoop client configurations.  I'd like to propose the following for consideration:
> # If the user is using "yarn" (the binary) we default HADOOP_MAPRED_HOME to the implementation of MR2 that we shipped with.  Since the {{yarn}} binary knows its name, and knows the relative path to hadoop-mapreduce, this would be an easy default to implement.
> # We have a softer way to trigger "prefer yarn" rather than specifying the directory. E.g., HADOOP_MAPRED_PREFER_MR2  This makes it easier to switch betwen the two without remember the details of where the directory is.
> Thoughts!
> Thanks!

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