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https://issues.apache.org/jira/browse/SPARK-2042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Armbrust resolved SPARK-2042.
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Resolution: Fixed
Fix Version/s: 1.1.0
1.0.1
https://github.com/apache/spark/pull/1048
> Take triggers unneeded shuffle.
> -------------------------------
>
> Key: SPARK-2042
> URL: https://issues.apache.org/jira/browse/SPARK-2042
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.0.0
> Reporter: Michael Armbrust
> Assignee: Sameer Agarwal
> Fix For: 1.0.1, 1.1.0
>
>
> This query really shouldn't trigger a shuffle:
> {code}
> sql("SELECT * FROM src LIMIT 10").take(5)
> {code}
> One fix would be to make the following changes:
> * Fix take to insert a logical limit and then collect()
> * Add a rule for collapsing adjacent limits
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