[BEAM-3052] ReduceFnRunner sets end-of-window hold even when no data is buffered

• Type: Bug
• Status: Resolved
• Priority: P2
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Component/s: runner-core
• Assignee: Kenneth Knowles
• Reporter: Kenneth Knowles
• Created: 12/Oct/17 22:03
• Updated: 16/May/20 13:43
• Resolved: 19/Jan/18 22:51

Description

If you set a trigger that ignores the end of the window (like repeated processing time trigger) and an early firing emits all the data, the ReduceFnRunner will leave an end-of-window watermark hold in place but only a GC timer.

Issue Links

• links to: GitHub Pull Request #3988
• links to: GitHub Pull Request #4001