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Practical Real-time Data Processing and Analytics

You're reading from   Practical Real-time Data Processing and Analytics Distributed Computing and Event Processing using Apache Spark, Flink, Storm, and Kafka

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Product type Paperback
Published in Sep 2017
Publisher Packt
ISBN-13 9781787281202
Length 360 pages
Edition 1st Edition
Languages
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Authors (2):
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Shilpi Saxena Shilpi Saxena
Author Profile Icon Shilpi Saxena
Shilpi Saxena
Saurabh Gupta Saurabh Gupta
Author Profile Icon Saurabh Gupta
Saurabh Gupta
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Table of Contents (20) Chapters Close

Title Page
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
1. Introducing Real-Time Analytics FREE CHAPTER 2. Real Time Applications – The Basic Ingredients 3. Understanding and Tailing Data Streams 4. Setting up the Infrastructure for Storm 5. Configuring Apache Spark and Flink 6. Integrating Storm with a Data Source 7. From Storm to Sink 8. Storm Trident 9. Working with Spark 10. Working with Spark Operations 11. Spark Streaming 12. Working with Apache Flink 13. Case Study

Balancing in Apache Beam


Apache Beam provides a way to keep balance between completeness, latency, and cost. Completeness refers here to how all events should process, latency is the time taken to execute an event and cost is the computing power required to finish the job. The following are the right questions that should be asked to build a Pipeline in Apache Beam which maintains balance between the above three parameters:

  • What results are calculated? By using the transformations available in Pipeline, the system is calculating results.
  • Where in the event time results are calculated? This is achieved by using event-time windowing. Event time windowing is further categorized into fixed, sliding, and session window.
  • When in processing time are results materialized? This is achieved by using watermark and triggers. Watermark is the way to measure the completeness of a sequence of events in an unbounded stream. The trigger defines when the output will be emitted from the window. These are the...
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