ParDo and DoFn Implementation in Apache Beam in Details

Author(s): Rashida Nasrin Sucky

Originally published on Towards AI.

Conclusion

Photo by ODISSEI on Unsplash

This member-only story is on us. Upgrade to access all of Medium.

Detail Explanation of Code For Beginners

I wrote a tutorial on some common transform functions in Apache Beam in a previous tutorial that covered map, filter, and combinePerKey(). This tutorial will be for ParDo transform which is nothing but another way of doing Map. But the difference is ParDo applies the transform in each PCollection and returns zero or more elements to the output PCollection. On the other hand, Map transform outputs exactly one element for each input element. In that way, ParDo provides us with… Read the full blog for free on Medium.

Join thousands of data leaders on the AI newsletter. Join over 80,000 subscribers and keep up to date with the latest developments in AI. From research to projects and ideas. If you are building an AI startup, an AI-related product, or a service, we invite you to consider becoming a sponsor.

Published via Towards AI