SlidingWindows seems to be rounding my periods. If I set the period to 1.5 and size to 3.5 seconds, it will create 3.5 windows every 1.0 second. It expected to have 3.5 second windows every 1.5 seconds.
Is it possible to have a period that is a fraction of a second?
This was fixed in https://github.com/apache/beam/pull/2600/files so should be available in the next beam release. Thanks for catching this issue.