You're reading from Data Engineering with Python

Product type Book

Published in Oct 2020

Publisher Packt

ISBN-13 9781839214189

Pages 356 pages

Edition 1st Edition

Languages

Python

Concepts

Data Analysis

Author (1):

Paul Crickard

Table of Contents (21) Chapters

Preface

1. Section 1: Building Data Pipelines – Extract Transform, and Load

2. Chapter 1: What is Data Engineering?

3. Chapter 2: Building Our Data Engineering Infrastructure

4. Chapter 3: Reading and Writing Files

5. Chapter 4: Working with Databases

6. Chapter 5: Cleaning, Transforming, and Enriching Data

7. Chapter 6: Building a 311 Data Pipeline

8. Section 2:Deploying Data Pipelines in Production

9. Chapter 7: Features of a Production Pipeline

10. Chapter 8: Version Control with the NiFi Registry

11. Chapter 9: Monitoring Data Pipelines

12. Chapter 10: Deploying Data Pipelines

13. Chapter 11: Building a Production Data Pipeline

14. Section 3:Beyond Batch – Building Real-Time Data Pipelines

15. Chapter 12: Building a Kafka Cluster

16. Chapter 13: Streaming Data with Apache Kafka

17. Chapter 14: Data Processing with Apache Spark

18. Chapter 15: Real-Time Edge Data with MiNiFi, Kafka, and Spark

19. Other Books You May Enjoy

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Appendix

The basics of NiFi clustering

Clustering in Apache NiFi follows a Zero-Master Clustering architecture. In this type of clustering, there is no pre-defined master. Every node can perform the same tasks, and the data is split between them. NiFi uses Zookeeper when deployed as a cluster.

Zookeeper will elect a Cluster Coordinator. The Cluster Coordinator is responsible for deciding whether new nodes can join – the nodes will connect to the coordinator – and to provide the updated flows to the new nodes.

While it sounds like the Cluster Coordinator is the master, it is not. You can make changes to the data pipelines on any node and they will be replicated to all the other nodes, meaning a non-Cluster Coordinator or a non-Primary Node can submit changes.

The Primary Node is also elected by Zookeeper. On the Primary Node, you can run isolated processes. An isolated process is a NiFi processor that runs only on the Primary Node. This is important because think what...