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https://issues.apache.org/jira/browse/SPARK-37727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17466286#comment-17466286
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Apache Spark commented on SPARK-37727:
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User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/35048
> Show ignored confs & hide warnings for conf already set in
> SparkSession.builder.getOrCreate
> -------------------------------------------------------------------------------------------
>
> Key: SPARK-37727
> URL: https://issues.apache.org/jira/browse/SPARK-37727
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Major
> Fix For: 3.3.0
>
>
> Currently, {{SparkSession.builder.getOrCreate()}} is too noisy even when
> duplicate configurations are set. And users cannot tell which configurations
> are to fix. See the example below:
> {code}
> ./bin/spark-shell --conf spark.abc=abc
> {code}
> {code}
> import org.apache.spark.sql.SparkSession
> spark.sparkContext.setLogLevel("DEBUG")
> SparkSession.builder.config("spark.abc", "abc").getOrCreate
> {code}
> {code}
> ...
> 21:12:40.601 [main] WARN org.apache.spark.sql.SparkSession - Using an
> existing SparkSession; some spark core configurations may not take effect.
> {code}
> This is strait forward when there are few configurations but it is difficult
> for users to figure out when there are too many configurations especially
> when these configurations are defined in property files like
> {{spark-default.conf}} that is sometimes maintained separately by system
> admins.
> See also https://github.com/apache/spark/pull/34757#discussion_r769248275
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