Is a new window created for each key/group?

[Vadim Vararu]

Hi guys,

I can see in many examples that window method is always preceded by keyBy:

|data.keyBy(<key selector>)|
|.window(SlidingEventTimeWindows.of(Time.seconds(10), Time.seconds(5)))|
|.<windowed transformation>(<window ||function||>)|
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Does it mean that a new window will be create for each group/key?

Thanks, Vadim.