Hi, 使用flink1.11,在SQL ddl中基于process time声明watermark报错
SQL validation failed. Watermark can not be defined for a processing time attribute column. 文档里关于watermark的解释也基本是跟eventTime在一起[1] 我想问的是基于processingTime的流处理是不需要watermark,还是被flink优化,不需要我们关心? [1] https://ci.apache.org/projects/flink/flink-docs-release-1.11/concepts/timely-stream-processing.html#event-time-and-watermarks Best