[jira] [Resolved] (SPARK-21728) Allow SparkSubmit to use logging

["Marcelo Vanzin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-21728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marcelo Vanzin resolved SPARK-21728.
------------------------------------
    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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