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https://issues.apache.org/jira/browse/SPARK-4548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14222154#comment-14222154
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Apache Spark commented on SPARK-4548:
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User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/3417
> Python broadcast is very slow
> -----------------------------
>
> Key: SPARK-4548
> URL: https://issues.apache.org/jira/browse/SPARK-4548
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 1.2.0
> Reporter: Davies Liu
>
> Python broadcast in 1.2 is much slower than 1.1:
> In spark-perf tests:
> name 1.1 1.2 speedup
> python-broadcast-w-set 3.63 16.68 -78.23%
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