git.net

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[jira] [Resolved] (GEARPUMP-342) Don't run DataSourceTask with WindowRunner unless necessary


     [ https://issues.apache.org/jira/browse/GEARPUMP-342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manu Zhang resolved GEARPUMP-342.
---------------------------------
    Resolution: Duplicate

> Don't run DataSourceTask with WindowRunner unless necessary
> -----------------------------------------------------------
>
>                 Key: GEARPUMP-342
>                 URL: https://issues.apache.org/jira/browse/GEARPUMP-342
>             Project: Apache Gearpump
>          Issue Type: Improvement
>    Affects Versions: 0.8.4
>            Reporter: Manu Zhang
>            Assignee: Manu Zhang
>            Priority: Major
>             Fix For: 0.8.5
>
>
> Currently, a windowed wordcount pipeline like {{source.flatMap.window.groupBy.count}} will actually be executed as {{source.globalWindow.flatMap.groupBy.window.count}} and {{globalWindow.flatMap}} run by a {{WindowRunner}}. 
> The {{globalWindow}} is unnecessary unless {{source}} is followed by an aggregation. Further, the {{globalWindow}} requires {{Watermark.MAX}} to trigger emits which is not obvious for users. 



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)