[jira] [Commented] (SPARK-22384) Refine partition pruning when attribute is wrapped in Cast

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-22384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532400#comment-16532400 ] 

Apache Spark commented on SPARK-22384:
--------------------------------------

User 'cloud-fan' has created a pull request for this issue:
https://github.com/apache/spark/pull/21712

> Refine partition pruning when attribute is wrapped in Cast
> ----------------------------------------------------------
>
>                 Key: SPARK-22384
>                 URL: https://issues.apache.org/jira/browse/SPARK-22384
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.2.0
>            Reporter: jin xing
>            Assignee: jin xing
>            Priority: Major
>             Fix For: 2.4.0
>
>
> Sql below will get all partitions from metastore, which put much burden on metastore;
> {{CREATE TABLE test (value INT) PARTITIONED BY (dt STRING)}}
> {{SELECT * from test where dt=2017}}
> The reason is that the the analyzed attribute {{dt}} is wrapped in {{Cast}} and {{HiveShim}} fails to generate a proper partition filter.
> Could we fix this? Sql like {{SELECT * from test where dt=2017}} is common in my warehouse.



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