Intermediate
Big Data & Data Engineering
Q64 / 100
What is a "watermark" used for in stream processing (e.g., Spark Structured Streaming, Flink)?
Correct! Well done.
Incorrect.
The correct answer is A) To track event time progress and decide when to consider late-arriving data as too late for a window
A
Correct Answer
To track event time progress and decide when to consider late-arriving data as too late for a window
Explanation
Watermarks define a threshold for how late data can arrive and still be included in a windowed computation, balancing latency and completeness.
Progress
64/100