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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2019/10/08 05:44:17 UTC

[jira] [Resolved] (SPARK-24456) Spark submit - server environment variables are overwritten by client environment variables

     [ https://issues.apache.org/jira/browse/SPARK-24456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-24456.
----------------------------------
    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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