JavaEdge

Aug 5, 2024 · Big Data

How to Handle Data Delay in Flink: Watermarks, Late Events, and Window Strategies

This article explains why out‑of‑order events cause delayed data in Flink, outlines their impact on computation accuracy and timeliness, identifies root causes such as network latency and watermark misconfiguration, and provides concrete watermark settings, allowed lateness, and step‑by‑step window‑triggering procedures with examples.