[FLINK-3669] WindowOperator registers a lot of timers at StreamTask

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.0.1
• Fix Version/s: 1.1.0
• Component/s: API / DataStream
• Assignee: Konstantin Knauf
• Reporter: Aljoscha Krettek
• Created: 27/Mar/16 07:35
• Updated: 28/Feb/19 11:14
• Resolved: 03/May/16 13:57

Description

Right now, the WindowOperator registers a timer at the StreamTask for every processing-time timer that a Trigger registers. We should combine several registered trigger timers to only register one low-level timer (timer coalescing).