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https://issues.apache.org/jira/browse/HIVE-6999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13998255#comment-13998255
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Ashutosh Chauhan commented on HIVE-6999:
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+1
> Add streaming mode to PTFs
> --------------------------
>
> Key: HIVE-6999
> URL: https://issues.apache.org/jira/browse/HIVE-6999
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 0.11.0, 0.12.0, 0.13.0
> Reporter: Harish Butani
> Assignee: Harish Butani
> Attachments: HIVE-6999.1.patch, HIVE-6999.2.patch
>
>
> There are a set of use cases where the Table Function can operate on a
> Partition row by row or on a subset(window) of rows as it is being streamed
> to it.
> - Windowing has couple of use cases of this:processing of Rank functions,
> processing of Window Aggregations.
> - But this is a generic concept: any analysis that operates on an Ordered
> partition maybe able to operate in Streaming mode.
> This patch introduces streaming mode in PTFs and provides the mechanics to
> handle PTF chains that contain both modes of PTFs.
> Subsequent patches will introduce Streaming mode for Windowing.
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