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https://issues.apache.org/jira/browse/HIVE-17775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16200915#comment-16200915
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Sergey Shelukhin commented on HIVE-17775:
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cc [~jcamachorodriguez] [~ashutoshc]
> PTF should take advantage of partitioning, bucketing and sorting
> ----------------------------------------------------------------
>
> Key: HIVE-17775
> URL: https://issues.apache.org/jira/browse/HIVE-17775
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
>
> When the user is running a PTF that partitions by a partition column of the
> table (or a bucketing column, although that could be more difficult), or
> orders by a partition column, or a column on which the table is already
> sorted being bucketed+sorted, the PTF should take advantage of these.
> That can turn some PTF operators (that I'm presently observing on a real
> query from a user) into a single scan, or at least a much simpler DAG; as it
> is, the query is very slow.
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