TY - RPRT TI - Watermarks in stream processing systems: semantics and comparative analysis of Apache Flink and Google cloud dataflow AU - Akidau, Tyler AU - Begoli, Edmon AU - Chernyak, Slava AU - Hueske, Fabian AU - Knight, Kathryn AU - Knowles, Kenneth AU - Mills, Daniel AU - Sotolongo, Dan PY - 2021 DO - 10.14778/3476311.3476389 UR - https://www.osti.gov/biblio/1823361 ID - 1823361 ER -