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https://issues.apache.org/jira/browse/SPARK-25415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-25415:
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Assignee: Apache Spark
> Make plan change log in RuleExecutor configurable by SQLConf
> ------------------------------------------------------------
>
> Key: SPARK-25415
> URL: https://issues.apache.org/jira/browse/SPARK-25415
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: Maryann Xue
> Assignee: Apache Spark
> Priority: Minor
>
> In RuleExecutor, after applying a rule, if the plan has changed, the before
> and after plan will be logged using level "trace". At times, however, such
> information can be very helpful for debugging, so making the log level
> configurable in SQLConf would allow users to turn on the plan change log
> independently and save the trouble of tweaking log4j settings.
> Meanwhile, filtering plan change log for specific rules can also be very
> useful.
> So I propose adding two confs:
> 1. spark.sql.optimizer.planChangeLog.level - set a specific log level for
> logging plan changes after a rule is applied.
> 2. spark.sql.optimizer.planChangeLog.rules - enable plan change logging only
> for a set of specified rules, separated by commas.
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