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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/12/04 06:51:00 UTC
[jira] [Commented] (SPARK-37542) Optimize the dynamic partitioning prune rules to avoid inserting unnecessary predicates to improve performance
[ https://issues.apache.org/jira/browse/SPARK-37542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17453301#comment-17453301 ]
Apache Spark commented on SPARK-37542:
--------------------------------------
User 'weixiuli' has created a pull request for this issue:
https://github.com/apache/spark/pull/34805
> Optimize the dynamic partitioning prune rules to avoid inserting unnecessary predicates to improve performance
> --------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-37542
> URL: https://issues.apache.org/jira/browse/SPARK-37542
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.1.0, 3.1.1, 3.1.2, 3.2.0
> Reporter: weixiuli
> Priority: Major
>
> Currently, the dynamic partition pruning rule will insert a predicate on the filterable table using the filter from the other side of the join and a custom wrapper called DynamicPruning，and the predicate will be re-optimized by the AQE or non-AQE.
> But, sometimes the predicate may be unnecessary if the join can NOT reuse broadcastExchange or it is not benefit，and it will be dropped by the rules of the AQE or non-AQE.
> We should optimize the dynamic partitioning pruning rule to avoid inserting unnecessary predicates to improve performance.
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