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Exam Associate-Developer-Apache-Spark-3.5 Topic 1 Question 120 Discussion

Actual exam question for Databricks's Associate-Developer-Apache-Spark-3.5 exam
Question #: 120
Topic #: 1
Given this code:

.withWatermark("event_time", "10 minutes")
.groupBy(window("event_time", "15 minutes"))
.count()
What happens to data that arrives after the watermark threshold?
Options:

Suggested Answer: B Vote an answer

According to Spark's watermarking rules:
"Records that are older than the watermark (event time < current watermark) are considered too late and are dropped." So, if a record's event_time is earlier than (max event_time seen so far - 10 minutes), it is discarded.

by Ian at Jul 16, 2026, 01:16 AM

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