Manu Zhang created GEARPUMP-342: ----------------------------------- Summary: 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 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 (v6.4.14#64029)