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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2021/08/24 10:37:00 UTC
[jira] [Commented] (SPARK-36574) pushDownPredicate=false failed to
prevent push down filters to JDBC data source
[ https://issues.apache.org/jira/browse/SPARK-36574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17403738#comment-17403738 ]
Apache Spark commented on SPARK-36574:
--------------------------------------
User 'beliefer' has created a pull request for this issue:
https://github.com/apache/spark/pull/33822
> pushDownPredicate=false failed to prevent push down filters to JDBC data source
> -------------------------------------------------------------------------------
>
> Key: SPARK-36574
> URL: https://issues.apache.org/jira/browse/SPARK-36574
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: jiaan.geng
> Priority: Major
>
> Spark SQL includes a data source that can read data from other databases using JDBC.
> Spark also supports the case-insensitive option pushDownPredicate.
> According to http://spark.apache.org/docs/latest/sql-data-sources-jdbc.html, If set pushDownPredicate to false, no filter will be pushed down to the JDBC data source and thus all filters will be handled by Spark.
> But I find it still be pushed down to JDBC data source.
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