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https://issues.apache.org/jira/browse/SPARK-24456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-24456.
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Resolution: Incomplete
> Spark submit - server environment variables are overwritten by client
> environment variables
> --------------------------------------------------------------------------------------------
>
> Key: SPARK-24456
> URL: https://issues.apache.org/jira/browse/SPARK-24456
> Project: Spark
> Issue Type: Bug
> Components: Spark Submit
> Affects Versions: 2.3.0
> Reporter: Alon Shoham
> Priority: Minor
> Labels: bulk-closed
>
> When submitting a spark application in --deploy-mode cluster + spark
> standalone cluster, environment variables from the client machine overwrite
> server environment variables.
>
> We use *SPARK_DIST_CLASSPATH* environment variable to add extra required
> dependencies to the application. We observed that client machine
> SPARK_DIST_CLASSPATH overwrite remote server machine value, resulting in
> application submission failure.
>
> We have inspected the code and found:
> 1. In org.apache.spark.deploy.Client line 86:
> {code:java}
> val command = new Command(mainClass,
> Seq("{{WORKER_URL}}", "{{USER_JAR}}", driverArgs.mainClass) ++
> driverArgs.driverOptions,
> sys.env, classPathEntries, libraryPathEntries, javaOpts){code}
> 2. In org.apache.spark.launcher.WorkerCommandBuilder line 35:
> {code:java}
> childEnv.putAll(command.environment.asJava)
> childEnv.put(CommandBuilderUtils.ENV_SPARK_HOME, sparkHome){code}
> Seen in line 35 is that the environment is overwritten in the server machine
> but in line 36 the SPARK_HOME is restored to the server value.
> We think the bug can be fixed by adding a line that restores
> SPARK_DIST_CLASSPATH to its server value, similar to SPARK_HOME
>
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