[jira] [Updated] (BEAM-1119) Add a trigger that fires in the middle of window

["Manu Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-1119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manu Zhang updated BEAM-1119:
-----------------------------
    Description: 
For a pane with elements and timestamps {{[(a, 1), (b, 4), (c, 5)]}}, 

* "a" would be emitted if watermark passes 1
* "a" and "b" would be emitted if watermark passes 4
* all the elements would be emitted if watermark passes 5 or the end of the window
* if the watermark jumps from 0 to 7 then all the elements would be emitted
* if "d" comes in late with timestamp 3, then it will be emitted if it's within the allowed lateness. 

> Add a trigger that fires in the middle of window
> ------------------------------------------------
>
>                 Key: BEAM-1119
>                 URL: https://issues.apache.org/jira/browse/BEAM-1119
>             Project: Beam
>          Issue Type: Improvement
>            Reporter: Manu Zhang
>
> For a pane with elements and timestamps {{[(a, 1), (b, 4), (c, 5)]}}, 
> * "a" would be emitted if watermark passes 1
> * "a" and "b" would be emitted if watermark passes 4
> * all the elements would be emitted if watermark passes 5 or the end of the window
> * if the watermark jumps from 0 to 7 then all the elements would be emitted
> * if "d" comes in late with timestamp 3, then it will be emitted if it's within the allowed lateness. 



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