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From "Jacek Laskowski (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-21728) Allow SparkSubmit to use logging
Date Wed, 30 Aug 2017 11:20:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-21728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16147086#comment-16147086
] 

Jacek Laskowski commented on SPARK-21728:
-----------------------------------------

Thanks [~sowen]. I'll label it as such when I know if it merits one (looks so, but waiting
for a response from [~vanzin] or others who'd know). Sent out an email to the Spark user mailing
list today.

> 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
>
>
> 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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