[FLINK-3243] Fix Interplay of TimeCharacteristic and Time Windows

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.0.0
• Component/s: API / DataStream
• Assignee: Aljoscha Krettek
• Reporter: Aljoscha Krettek
• Created: 15/Jan/16 15:29
• Updated: 28/Feb/19 11:14
• Resolved: 17/Feb/16 10:01

Description

As per the discussion on the Dev ML: http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-Time-Behavior-in-Streaming-Jobs-Event-time-processing-time-td9616.html.

The discussion seems to have converged on option 2):

• Add dedicated WindowAssigners for processing time and event time
• timeWindow() and timeWindowAll() respect the set TimeCharacteristic.

This will make the easy stuff easy, i.e. using time windows and quickly switching the time characteristic. Users will then have the flexibility to mix different kinds of window assigners in their job.