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From "Kenneth Knowles (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (BEAM-210) Allow control of empty ON_TIME panes analogous to final panes
Date Fri, 15 Jul 2016 20:06:20 GMT

     [ https://issues.apache.org/jira/browse/BEAM-210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kenneth Knowles updated BEAM-210:
---------------------------------
    Description: Today, ON_TIME panes are emitted whether or not they are empty. We had decided
that for final panes the user would want to control this behavior, to control data volume.
But for ON_TIME panes no such control exists. The rationale is perhaps that the ON_TIME pane
is a fundamental result that should not be elided. To be considered: whether this is what
we want.  (was: Currently ReduceFnRunner.onTrigger uses shouldEmit to prevent empty final
panes unless the user has requested them.

The same check needs to be done in ReduceFnRunner.onTimer)

> Allow control of empty ON_TIME panes analogous to final panes
> -------------------------------------------------------------
>
>                 Key: BEAM-210
>                 URL: https://issues.apache.org/jira/browse/BEAM-210
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-core
>            Reporter: Mark Shields
>            Assignee: Kenneth Knowles
>
> Today, ON_TIME panes are emitted whether or not they are empty. We had decided that for
final panes the user would want to control this behavior, to control data volume. But for
ON_TIME panes no such control exists. The rationale is perhaps that the ON_TIME pane is a
fundamental result that should not be elided. To be considered: whether this is what we want.



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