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From "Kenneth Knowles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-32) Consider not emitting empty ON_TIME pane unless requested
Date Tue, 20 Jun 2017 18:19:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-32?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16056221#comment-16056221
] 

Kenneth Knowles commented on BEAM-32:
-------------------------------------

Even though anyone affected by this probably has an erroneous pipeline, it is still backwards
incompatible. I am going to close it and just go with BEAM-210 to give an option.

> Consider not emitting empty ON_TIME pane unless requested
> ---------------------------------------------------------
>
>                 Key: BEAM-32
>                 URL: https://issues.apache.org/jira/browse/BEAM-32
>             Project: Beam
>          Issue Type: New Feature
>          Components: beam-model, runner-core
>            Reporter: Kenneth Knowles
>            Priority: Minor
>              Labels: Triggers, Windowing, backward-incompatible
>             Fix For: Not applicable
>
>
> Today, the ReduceFnRunner sets a timers and emits an empty ON_TIME pane as long as the
trigger allows it. This could be controlled in a manner analogous to the empty final pane
at window expiration (also owned by the ReduceFnRunner).



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