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

["Philip Zeyliger (JIRA)" <ji...@apache.org>]

Philip Zeyliger created BIGTOP-1054:
---------------------------------------

             Summary: 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!

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira