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https://issues.apache.org/jira/browse/SPARK-7706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14548306#comment-14548306
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Shaik Idris Ali commented on SPARK-7706:
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We might have multiple types of applications running on Yarn cluster and it
might not be a good idea to setup application specific Env variables in all the
nodes of a cluster.
I understand that for submitting Ad-hoc jobs from command line it make sense to
have YARN_CONF_DIR set in one of the machine which acts like Spark client. We
can support both Spark argument and Env variable for such configurations.
> Allow setting YARN_CONF_DIR from spark argument
> -----------------------------------------------
>
> Key: SPARK-7706
> URL: https://issues.apache.org/jira/browse/SPARK-7706
> Project: Spark
> Issue Type: Improvement
> Components: Spark Submit
> Affects Versions: 1.3.1
> Reporter: Shaik Idris Ali
> Labels: oozie, yarn
>
> Currently in SparkSubmitArguments.scala when master is set to "yarn"
> (yarn-cluster mode)
> https://github.com/apache/spark/blob/b1f4ca82d170935d15f1fe6beb9af0743b4d81cd/core/src/main/scala/org/apache/spark/deploy/SparkSubmitArguments.scala#L236
> Spark checks if YARN_CONF_DIR or HADOOP_CONF_DIR is set in EVN.
> However we should additionally allow passing YARN_CONF_DIR from command line
> argument this is particularly handy when Spark is being launched from
> schedulers like OOZIE or FALCON.
> Reason being, oozie launcher App starts in one of the container assigned by
> Yarn RM and we do not want to set YARN_CONF_DIR in ENV for all the nodes in
> cluster. Just passing the argument like -yarnconfdir with conf dir (ex:
> /etc/hadoop/conf) should avoid setting the ENV variable.
> This is blocking us to onboard spark from oozie or falcon. Thanks.
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