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https://issues.apache.org/jira/browse/SPARK-32544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17171880#comment-17171880
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Hyukjin Kwon commented on SPARK-32544:
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This will be deal with together with DataSource V2.

> Bucketing and Partitioning information are not passed on to non FileFormat 
> datasource writes
> --------------------------------------------------------------------------------------------
>
>                 Key: SPARK-32544
>                 URL: https://issues.apache.org/jira/browse/SPARK-32544
>             Project: Spark
>          Issue Type: Improvement
>          Components: Input/Output
>    Affects Versions: 3.0.0
>            Reporter: Rahij Ramsharan
>            Priority: Major
>
> When writing to a FileFormat datasource, bucket spec and partition columns 
> are passed into InsertIntoHadoopFsRelationCommand: 
> [https://github.com/apache/spark/blob/v3.0.0/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala#L474-L475].
>  
> However, from what I can tell, the RelationProvider API does not have a way 
> to pass in these: 
> [https://github.com/apache/spark/blob/v3.0.0/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala#L511-L513].
>  



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