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https://issues.apache.org/jira/browse/DRILL-1908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14261373#comment-14261373
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Deneche A. Hakim commented on DRILL-1908:
-----------------------------------------

first step in the implementation: I got my own operator to save all incoming 
batches into a list of RecordBatchData, once no more batches are available the 
operator sends the saved batches downstream one at a time.

The code is available in my repo:

https://github.com/adeneche/incubator-drill/tree/DRILL-1908

One thing I noticed is that once I start sending the saved batches downstream, 
I always need to return OK_NEW_SCHEMA or I get exceptions downstream.

> 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
>            Reporter: Deneche A. Hakim
>            Assignee: Deneche A. Hakim
>            Priority: Critical
>
> 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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