With an AscendingTimestampExtractor, watermarks are not created for every
event, and as your job starts up, some events will be processed before the
first watermark is generated.
The impossible value you see is an initial value that's in place until the
first real watermark is available. On the ot
My source is a Kafka topic.
I am using Event Time.
I assign the event time with an AscendingTimestampExtractor
I noticed when debugging that in the KeyedProcessFunction that
after my highest known event time of: 2020-06-23T00:46:30.000Z
the processElement method had a watermark with an impossibl