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CERTIFIED-DATA-ENGINEER-PROFESSIONAL · Question #21

CERTIFIED-DATA-ENGINEER-PROFESSIONAL Question #21: Real Exam Question with Answer & Explanation

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Streaming Data Processing

Question

A Structured Streaming job deployed to production has been experiencing delays during peak hours of the day. At present, during normal execution, each microbatch of data is processed in less than 3 seconds. During peak hours of the day, execution time for each microbatch becomes very inconsistent, sometimes exceeding 30 seconds. The streaming write is currently configured with a trigger interval of 10 seconds. Holding all other variables constant and assuming records need to be processed in less than 10 seconds, which adjustment will meet the requirement?

Options

  • ADecrease the trigger interval to 5 seconds; triggering batches more frequently allows idle
  • BIncrease the trigger interval to 30 seconds; setting the trigger interval near the maximum
  • CThe trigger interval cannot be modified without modifying the checkpoint directory; to maintain the
  • DUse the trigger once option and configure a Databricks job to execute the query every 10
  • EDecrease the trigger interval to 5 seconds; triggering batches more frequently may prevent

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Topics

#Structured Streaming#Performance Optimization#Trigger Interval#Microbatch Processing
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