easy5 pts · first answer countskafkaevent-timewatermarks

What a watermark says

In Flink or Spark, a watermark at time T flows through a stream job. What does it claim?

A.No more events with event time at or before T are expectedB.All events up to T have been written to the sinkC.The job's clock has reached T in processing timeD.Kafka has deleted all records older than T

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What a watermark says

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