Hopping Window return empty list

[jefferyng33106]

Checklist

• I have included information about relevant versions
• I have verified that the issue persists when using the master branch of Faust.

Steps to reproduce

Hello, I am trying to understand how the table + windowing works

The issue is when I use:

1. multiple partition + no matter it's store://rocksdb or memory
2. or in local mode with only 1 partition + rocksdb

Also I've checked:

• Different behavior when switching to rocksdb store #510
• Tumbling window does not work with rocksdb store, until or unless we set NO_CYTHON=True.  #705
• Cython implementation of HoppingWindow.ranges returns tuples with (int, float) #674
• Fix #674 by explicitly setting return type to float in Cython version of HoppingWindow.ranges() #675

But using export NO_CYTHON=True is not working

what I expect:

["dummy message 1", "dummy message 2"]

But what I get:

[]  # -> always empty list

Versions

• Python version 3.7.0
• Faust version 1.10.4
• Operating system MacOS 10.15.7
• Kafka version
• RocksDB version (if applicable)