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From "Deneche A. Hakim (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-1908) new window function implementation
Date Wed, 21 Jan 2015 16:47:35 GMT

    [ https://issues.apache.org/jira/browse/DRILL-1908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14285860#comment-14285860
] 

Deneche A. Hakim commented on DRILL-1908:
-----------------------------------------

Also, when a partition of rows exceeds the current processed batch, it will be kept as "pending"
and processed when the WindowFrameRecordBatch.next() is called again. If the schema changes,
the framer is "rebuilt" and the pending information is lost which may lead to incorrect results.
This can be fixed, but I will first need to generate some test data that generate this kind
of problems.

> new window function implementation
> ----------------------------------
>
>                 Key: DRILL-1908
>                 URL: https://issues.apache.org/jira/browse/DRILL-1908
>             Project: Apache Drill
>          Issue Type: Improvement
>          Components: Execution - Operators
>    Affects Versions: 0.7.0
>            Reporter: Deneche A. Hakim
>            Assignee: Deneche A. Hakim
>            Priority: Critical
>             Fix For: Future
>
>         Attachments: DRILL-1908.1.patch.txt, DRILL-1908.2.patch.txt
>
>
> In order to fix DRILL-1487 a complete rewrite of the StreamingWindowFrameRecordBatch
may be needed. The purpose of this issue is to report my progress and share my thoughts with
the community in order to get a proper implementation



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