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https://issues.apache.org/jira/browse/SPARK-36643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17408274#comment-17408274
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Senthil Kumar commented on SPARK-36643:
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Creating PR for this
> Add more information in ERROR log while SparkConf is modified when
> spark.sql.legacy.setCommandRejectsSparkCoreConfs is set
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-36643
> URL: https://issues.apache.org/jira/browse/SPARK-36643
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.1.2
> Reporter: Senthil Kumar
> Priority: Minor
>
> Right now, by default sql.legacy.setCommandRejectsSparkCoreConfs is set as
> true in Spark 3.* versions int order to avoid changing Spark Confs. But from
> the error message we get confused if we can not modify/change Spark conf in
> Spark 3.* or not.
> Current Error Message :
> {code:java}
> Exception in thread "main" org.apache.spark.sql.AnalysisException: Cannot
> modify the value of a Spark config: spark.driver.host
> at
> org.apache.spark.sql.RuntimeConfig.requireNonStaticConf(RuntimeConfig.scala:156)
> at org.apache.spark.sql.RuntimeConfig.set(RuntimeConfig.scala:40){code}
>
> So adding little more information( how to modify Spark Conf), in ERROR log
> while SparkConf is modified when
> spark.sql.legacy.setCommandRejectsSparkCoreConfs is 'true', will be helpful
> to avoid confusions.
>
>
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