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From "Takeshi Yamamuro (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-12476) Implement JdbcRelation#unhandledFilters for removing unnecessary Spark Filter
Date Tue, 22 Dec 2015 04:20:46 GMT

     [ https://issues.apache.org/jira/browse/SPARK-12476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Takeshi Yamamuro updated SPARK-12476:
-------------------------------------
    Summary: Implement JdbcRelation#unhandledFilters for removing unnecessary Spark Filter
 (was: Implement JdbcRelation#unhandledFilters for removing unnecessary Spark Fileter)

> 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'
> {code}
> Current plan:
> == 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 ==
> +- 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}



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