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https://issues.apache.org/jira/browse/BEAM-5203?focusedWorklogId=166505&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-166505
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ASF GitHub Bot logged work on BEAM-5203:
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Author: ASF GitHub Bot
Created on: 15/Nov/18 16:44
Start Date: 15/Nov/18 16:44
Worklog Time Spent: 10m
Work Description: apilloud commented on issue #6996: [BEAM-5203] expose
PaneInfo and BoundedWindow as UDF
URL: https://github.com/apache/beam/pull/6996#issuecomment-439107163
(cc: @kennknowles This has SQL language design implications you should be
aware of.)
Sorry for missing this the first time, I'll spend the morning looking into
it. It looks like the actual goal of this is not to add a windowed UDF but to
add 7 built in functions for using in joins: FIRST_PANE, LAST_PANE,
PANE_TIMING, PANE_INDEX, WINDOW_TYPE, WINDOW_START, WINDOW_END
There are performance benefits to not running UDFs in window context. I have
a outstanding PR that removes windows from UDFs entirely: #6417 That same PR
deletes most of this code. I think adding the functions directly would be more
compatible with that and could probably be done without changing calcite, so
let me do some digging.
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Issue Time Tracking
-------------------
Worklog Id: (was: 166505)
Time Spent: 1h 10m (was: 1h)
> expose PaneInfo and BoundedWindow as UDF
> ----------------------------------------
>
> Key: BEAM-5203
> URL: https://issues.apache.org/jira/browse/BEAM-5203
> Project: Beam
> Issue Type: Improvement
> Components: dsl-sql
> Reporter: Xu Mingmin
> Assignee: Xu Mingmin
> Priority: Major
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> besides adding new keywords in Calcite, there's an alternative way to expose
> PaneInfo and BoundedWindow of Row by UDF.
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