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https://issues.apache.org/jira/browse/SPARK-12948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110072#comment-15110072
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Apache Spark commented on SPARK-12948:
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User 'rajeshbalamohan' has created a pull request for this issue:
https://github.com/apache/spark/pull/10861
> Consider reducing size of broadcasts in OrcRelation
> ---------------------------------------------------
>
> Key: SPARK-12948
> URL: https://issues.apache.org/jira/browse/SPARK-12948
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Rajesh Balamohan
> Attachments: SPARK-12948_cpuProf.png
>
>
> Size of broadcasted data in OrcRelation was significantly higher when running
> query with large number of partitions (e.g TPC-DS). Consider reducing the
> size of the broadcasted data in OrcRelation, as it has an impact on the job
> runtime.
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