[jira] [Created] (YARN-6434) When setting environment variables, can't use comma for a list of value in key = value pairs.

[Jaeboo Jeong (JIRA)]

Jaeboo Jeong created YARN-6434:
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             Summary: When setting environment variables, can't use comma for a 
list of value in key = value pairs.
                 Key: YARN-6434
                 URL: https://issues.apache.org/jira/browse/YARN-6434
             Project: Hadoop YARN
          Issue Type: Improvement
            Reporter: Jaeboo Jeong


We can set environment variables using yarn.app.mapreduce.am.env, 
mapreduce.map.env, mapreduce.reduce.env.
There is no problem if we use key=value pairs like X=Y, X=$Y.
However If we want to set key=a list of value pair(e.g. X=Y,Z), we can’t.
This is related to YARN-4595.

The attached patch is based on YARN-3768.
We can set environment variables like below.

{code}
mapreduce.map.env="YARN_CONTAINER_RUNTIME_TYPE=docker,YARN_CONTAINER_RUNTIME_DOCKER_IMAGE=hadoop-docker,YARN_CONTAINER_RUNTIME_DOCKER_LOCAL_RESOURCE_MOUNTS=\"/dir1:/targetdir1,/dir2:/targetdir2\""
{code}




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