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https://issues.apache.org/jira/browse/SPARK-4648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14228312#comment-14228312
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Apache Spark commented on SPARK-4648:
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User 'ravipesala' has created a pull request for this issue:
https://github.com/apache/spark/pull/3510
> Use available Coalesce function in HiveQL instead of using HiveUDF. And
> support Coalesce in Spark SQL.
> ------------------------------------------------------------------------------------------------------
>
> Key: SPARK-4648
> URL: https://issues.apache.org/jira/browse/SPARK-4648
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.1.0
> Reporter: Ravindra Pesala
>
> Currently HiveQL uses Hive UDF function for Coalesce. Usually using hive udfs
> are memory intensive. Since Coalesce function is already available in Spark ,
> we can make use of it.
> And also support Coalesce function in Spar SQL
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