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https://issues.apache.org/jira/browse/SPARK-25934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16674191#comment-16674191
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Apache Spark commented on SPARK-25934:
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User 'mpmolek' has created a pull request for this issue:
https://github.com/apache/spark/pull/22937
> Mesos: SPARK_CONF_DIR should not be propogated by spark submit
> --------------------------------------------------------------
>
> Key: SPARK-25934
> URL: https://issues.apache.org/jira/browse/SPARK-25934
> Project: Spark
> Issue Type: Bug
> Components: Mesos
> Affects Versions: 2.3.2
> Reporter: Matt Molek
> Priority: Major
>
> This is very similar to how SPARK_HOME caused problems for spark on Mesos in
> SPARK-12345
> The `spark submit` command is setting spark.mesos.driverEnv.SPARK_CONF_DIR to
> whatever the SPARK_CONF_DIR was for the command that submitted the job.
> This is doesn't make sense for most mesos situations, and it broke spark for
> my team when we upgraded from 2.2.0 to 2.3.2. I haven't tested it but I think
> 2.4.0 will have the same issue.
> It's preventing spark-env.sh from running because now SPARK_CONF_DIR points
> to some non-existent directory, instead of the unpacked spark binary in the
> Mesos sandbox like it should.
> I'm not that familiar with the spark code base, but I think this could be
> fixed by simply adding a `&& k != "SPARK_CONF_DIR"` clause to this filter
> statement:
> https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/rest/RestSubmissionClient.scala#L421
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