In Dataflow streaming pipelines, what is the purpose of watermarks?

Google Cloud (GCP) Hard

Google Cloud (GCP) — Hard

In Dataflow streaming pipelines, what is the purpose of watermarks?

Key points

  • Watermarks help handle late-arriving data
  • They are crucial for windowing operations
  • Watermarks are not related to security or worker management
  • Event time tracking is their primary function

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