Book Image

Mastering Apache Storm

By : Ankit Jain
Book Image

Mastering Apache Storm

By: Ankit Jain

Overview of this book

Apache Storm is a real-time Big Data processing framework that processes large amounts of data reliably, guaranteeing that every message will be processed. Storm allows you to scale your data as it grows, making it an excellent platform to solve your big data problems. This extensive guide will help you understand right from the basics to the advanced topics of Storm. The book begins with a detailed introduction to real-time processing and where Storm fits in to solve these problems. You’ll get an understanding of deploying Storm on clusters by writing a basic Storm Hello World example. Next we’ll introduce you to Trident and you’ll get a clear understanding of how you can develop and deploy a trident topology. We cover topics such as monitoring, Storm Parallelism, scheduler and log processing, in a very easy to understand manner. You will also learn how to integrate Storm with other well-known Big Data technologies such as HBase, Redis, Kafka, and Hadoop to realize the full potential of Storm. With real-world examples and clear explanations, this book will ensure you will have a thorough mastery of Apache Storm. You will be able to use this knowledge to develop efficient, distributed real-time applications to cater to your business needs.
Table of Contents (19 chapters)
Title Page
About the Author
About the Reviewers
Customer Feedback

Distributed RPC

Distributed RPC is used to query on and retrieve results from Trident topology on the fly. Storm has an in-built distributed RPC server. The distributed RPC server receives the RPC request from the client and passes it to the Storm topology. The topology processes the request and sends the result to the distributed RPC server, which is redirected by the distributed RPC server to the client.

We can configure the distributed RPC server by using the following properties in the storm.yaml file:

     - "nimbus-node" 

Here, nimbus-node is the IP of the distributed RPC server.

Now, run this command on the nimbus-node machine to start the distributed RPC server:

> bin/storm drpc

Let's assume we are storing the count aggregation of hello world Trident topology in a database and want to retrieve the count for a given country on the fly. We would need to use the distributed RPC feature to achieve this. This example shows how we can incorporate the distributed RPC in the...