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https://issues.apache.org/jira/browse/SPARK-911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14059548#comment-14059548
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Aaron commented on SPARK-911:
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pull request https://github.com/apache/spark/pull/1381/files
> Support map pruning on sorted (K, V) RDD's
> ------------------------------------------
>
> Key: SPARK-911
> URL: https://issues.apache.org/jira/browse/SPARK-911
> Project: Spark
> Issue Type: Bug
> Reporter: Patrick Wendell
>
> If someone has sorted a (K, V) rdd, we should offer them a way to filter a
> range of the partitions that employs map pruning. This would be simple using
> a small range index within the rdd itself. A good example is I sort my
> dataset by time and then I want to serve queries that are restricted to a
> certain time range.
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