Book Image

Apache Oozie Essentials

By : Jagat Singh
Book Image

Apache Oozie Essentials

By: Jagat Singh

Overview of this book

As more and more organizations are discovering the use of big data analytics, interest in platforms that provide storage, computation, and analytic capabilities is booming exponentially. This calls for data management. Hadoop caters to this need. Oozie fulfils this necessity for a scheduler for a Hadoop job by acting as a cron to better analyze data. Apache Oozie Essentials starts off with the basics right from installing and configuring Oozie from source code on your Hadoop cluster to managing your complex clusters. You will learn how to create data ingestion and machine learning workflows. This book is sprinkled with the examples and exercises to help you take your big data learning to the next level. You will discover how to write workflows to run your MapReduce, Pig ,Hive, and Sqoop scripts and schedule them to run at a specific time or for a specific business requirement using a coordinator. This book has engaging real-life exercises and examples to get you in the thick of things. Lastly, you’ll get a grip of how to embed Spark jobs, which can be used to run your machine learning models on Hadoop. By the end of the book, you will have a good knowledge of Apache Oozie. You will be capable of using Oozie to handle large Hadoop workflows and even improve the availability of your Hadoop environment.
Table of Contents (16 chapters)
Apache Oozie Essentials
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Bundles


So far, you've learned about Workflows (what to do) and Coordinators (when to do) in Oozie.

Now we will cover Bundles. Bundles are a group of Coordinators that are grouped together and managed all as one bundle. This makes it easy to operate set of Coordinators to start, stop, and resume the jobs.

The basic SVG diagram for the Bundles is shown here:

Bundles specification

Bundle needs to have information about the set of Coordinators for which it is responsible and the kick-off time. Kick-off time is the time at which Bundle should start and submit all the applications to the Oozie server. The Coordinators which are a part of a Bundle may or may not have a relationship between them. They can be part of the same or different data pipelines. Generally, the best practice is to bundle all tables that are coming from the same database, or bundle all Coordinators that are part of same data pipeline.

You might want to check out the pictorial representation of Bundle's job flow on this blog:

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