[ https://issues.apache.org/jira/browse/SPARK-7504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14538337#comment-14538337 ]
Zoltán Zvara commented on SPARK-7504: ------------------------------------- You are making a point. I will extend my solution to throw an error message earlier. > NullPointerException when initializing SparkContext in YARN-cluster mode > ------------------------------------------------------------------------ > > Key: SPARK-7504 > URL: https://issues.apache.org/jira/browse/SPARK-7504 > Project: Spark > Issue Type: Bug > Components: Deploy, YARN > Reporter: Zoltán Zvara > Labels: deployment, yarn, yarn-client > > It is not clear for most users that, while running Spark on YARN a > {{SparkContext}} with a given execution plan can be run locally as > {{yarn-client}}, but can not deploy itself to the cluster. This is currently > performed using {{org.apache.spark.deploy.yarn.Client}}. {color:gray} I think > we should support deployment through {{SparkContext}}, but this is not the > point I wish to make here. {color} > Configuring a {{SparkContext}} to deploy itself currently will yield an > {{ERROR}} while accessing {{spark.yarn.app.id}} in > {{YarnClusterSchedulerBackend}}, and after that a {{NullPointerException}} > while referencing the {{ApplicationMaster}} instance. > Spark should clearly inform the user that it might be running in > {{yarn-cluster}} mode without a proper submission using {{Client}} and that > deploying is not supported directly from {{SparkContext}}. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org