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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/12/22 05:24:46 UTC
[jira] [Commented] (SPARK-12476) Implement
JdbcRelation#unhandledFilters for removing unnecessary Spark Filter
[ https://issues.apache.org/jira/browse/SPARK-12476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15067528#comment-15067528 ]
Apache Spark commented on SPARK-12476:
--------------------------------------
User 'maropu' has created a pull request for this issue:
https://github.com/apache/spark/pull/10427
> Implement JdbcRelation#unhandledFilters for removing unnecessary Spark Filter
> -----------------------------------------------------------------------------
>
> Key: SPARK-12476
> URL: https://issues.apache.org/jira/browse/SPARK-12476
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Takeshi Yamamuro
>
> Input: SELECT * FROM jdbcTable WHERE col0 = 'xxx'
> Current plan:
> {code}
> == Optimized Logical Plan ==
> Project [col0#0,col1#1]
> +- Filter (col0#0 = xxx)
> +- Relation[col0#0,col1#1] JDBCRelation(jdbc:postgresql:postgres,testRel,[Lorg.apache.spark.Partition;@2ac7c683,{user=maropu, password=, driver=org.postgresql.Driver})
> == Physical Plan ==
> +- Filter (col0#0 = xxx)
> +- Scan JDBCRelation(jdbc:postgresql:postgres,testRel,[Lorg.apache.spark.Partition;@2ac7c683,{user=maropu, password=, driver=org.postgresql.Driver})[col0#0,col1#1] PushedFilters: [EqualTo(col0,xxx)]
> {code}
> This patch enables a plan below;
> {code}
> == Optimized Logical Plan ==
> Project [col0#0,col1#1]
> +- Filter (col0#0 = xxx)
> +- Relation[col0#0,col1#1] JDBCRelation(jdbc:postgresql:postgres,testRel,[Lorg.apache.spark.Partition;@2ac7c683,{user=maropu, password=, driver=org.postgresql.Driver})
> == Physical Plan ==
> Scan JDBCRelation(jdbc:postgresql:postgres,testRel,[Lorg.apache.spark.Partition;@2ac7c683,{user=maropu, password=, driver=org.postgresql.Driver})[col0#0,col1#1] PushedFilters: [EqualTo(col0,xxx)]
> {code}
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