[jira] [Created] (KAFKA-13145) Renaming the time interval window for better understanding

["Luke Chen (Jira)" <ji...@apache.org>]

Luke Chen created KAFKA-13145:
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             Summary: Renaming the time interval window for better understanding
                 Key: KAFKA-13145
                 URL: https://issues.apache.org/jira/browse/KAFKA-13145
             Project: Kafka
          Issue Type: Improvement
          Components: streams
            Reporter: Luke Chen
            Assignee: Luke Chen


 

I have another thought, which is to rename the time interval related windows. Currently, we have 3 types of time interval window:
 {{TimeWindow}} -> to have {{[start,end)}} time interval
 {{SessionWindow}} -> to have {{[start,end]}} time interval
 {{UnlimitedWindow}} -> to have {{[start, MAX_VALUE)}} time interval

I think the name {{SessionWindow}} is definitely not good here, especially we want to use it in {{SlidingWindows}} now, although it is only used for {{SessionWindows}} before. We should name them with time interval meaning, not the streaming window functions meaning. {{}}Because these 3 window types are internal use only, it is safe to rename them.

 

{{TimeWindow}} --> {{InclusiveExclusiveWindow}}
 {{SessionWindow}} / {{SlidingWindow}} --> {{InclusiveInclusiveWindow}}
 {{UnlimitedWindow}} --> {{InclusiveUnboundedWindow}}

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See the discussion here{{: [https://github.com/apache/kafka/pull/11124#issuecomment-887989639]}}

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