Hi, If you do not explicitly assign timestamps and watermarks when using Event Time, does it automatically default to using Ingestion Time?
I was reading the Kinesis integration section and came across the note below and which raised the above question. I saw another place where you explicitly use Event Time with ingestion time with the following - .assignTimestampsAndWatermarks(new IngestionTimeExtractor<>());. Does that line have to called explicitly or is it the default? "If streaming topologies choose to use the event time notion <https://ci.apache.org/projects/flink/flink-docs-master/apis/streaming/event_time.html> for record timestamps, an *approximate arrival timestamp* will be used by default. This timestamp is attached to records by Kinesis once they were successfully received and stored by streams. Note that this timestamp is typically referred to as a Kinesis server-side timestamp, and there are no guarantees about the accuracy or order correctness (i.e., the timestamps may not always be ascending)." Thanks, Sameer
