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https://issues.apache.org/jira/browse/SPARK-21728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcelo Vanzin resolved SPARK-21728.
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Resolution: Fixed
> Allow SparkSubmit to use logging
> --------------------------------
>
> Key: SPARK-21728
> URL: https://issues.apache.org/jira/browse/SPARK-21728
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.3.0
> Reporter: Marcelo Vanzin
> Assignee: Marcelo Vanzin
> Priority: Minor
> Fix For: 2.3.0
>
> Attachments: logging.patch, sparksubmit.patch
>
>
> Currently, code in {{SparkSubmit}} cannot call classes or methods that
> initialize the Spark {{Logging}} framework. That is because at that time
> {{SparkSubmit}} doesn't yet know which application will run, and logging is
> initialized differently for certain special applications (notably, the
> shells).
> It would be better if either {{SparkSubmit}} did logging initialization
> earlier based on the application to be run, or did it in a way that could be
> overridden later when the app initializes.
> Without this, there are currently a few parts of {{SparkSubmit}} that
> duplicates code from other parts of Spark just to avoid logging. For example:
> *
> [downloadFiles|https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala#L860]
> replicates code from Utils.scala
> *
> [createTempDir|https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/deploy/DependencyUtils.scala#L54]
> replicates code from Utils.scala and installs its own shutdown hook
> * a few parts of the code could use {{SparkConf}} but can't right now because
> of the logging issue.
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