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This article will explain in detail how to operate join in Spark API programming, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

We create two files in / data/join of hdfs:

The first file you upload is named 1.txt

The first column of the content is the date and the second column uid (ordinary user id)

Perform upload to hdfs:

Web console Management query:

Then declare two case class:Register and Login

Take operation:

Take operation:

Fetch the result of the join operation:

Or save the execution result to HDFS:

On how to carry out Spark API programming join operations in-depth combat sharing here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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