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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2020/08/26 01:00:00 UTC

[jira] [Commented] (SPARK-32704) Logging plan changes for execution

    [ https://issues.apache.org/jira/browse/SPARK-32704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17184823#comment-17184823 ] 

Apache Spark commented on SPARK-32704:
--------------------------------------

User 'maropu' has created a pull request for this issue:
https://github.com/apache/spark/pull/29544

> Logging plan changes for execution
> ----------------------------------
>
>                 Key: SPARK-32704
>                 URL: https://issues.apache.org/jira/browse/SPARK-32704
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Takeshi Yamamuro
>            Priority: Minor
>
> Since we only log plan changes for analyzer/optimizer now, this ticket targets adding code to log plan changes in the preparation phase in QueryExecution for execution.
> {code}
> scala> spark.sql("SET spark.sql.optimizer.planChangeLog.level=WARN")
> scala> spark.range(10).groupBy("id").count().queryExecution.executedPlan
> ...
> 20/08/26 09:32:36 WARN PlanChangeLogger: 
> === Applying Rule org.apache.spark.sql.execution.CollapseCodegenStages ===
> !HashAggregate(keys=[id#19L], functions=[count(1)], output=[id#19L, count#23L])              *(1) HashAggregate(keys=[id#19L], functions=[count(1)], output=[id#19L, count#23L])
> !+- HashAggregate(keys=[id#19L], functions=[partial_count(1)], output=[id#19L, count#27L])   +- *(1) HashAggregate(keys=[id#19L], functions=[partial_count(1)], output=[id#19L, count#27L])
> !   +- Range (0, 10, step=1, splits=4)                                                          +- *(1) Range (0, 10, step=1, splits=4)
>          
> 20/08/26 09:32:36 WARN PlanChangeLogger: 
> === Result of Batch Preparations ===
> !HashAggregate(keys=[id#19L], functions=[count(1)], output=[id#19L, count#23L])              *(1) HashAggregate(keys=[id#19L], functions=[count(1)], output=[id#19L, count#23L])
> !+- HashAggregate(keys=[id#19L], functions=[partial_count(1)], output=[id#19L, count#27L])   +- *(1) HashAggregate(keys=[id#19L], functions=[partial_count(1)], output=[id#19L, count#27L])
> !   +- Range (0, 10, step=1, splits=4)  
> {code}



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