JuiceFS can used in AWS EMR cluster, we have customers using JuiceFS to address the consistency and performance issues from S3.

There is a blog post [1] talking about this use case. Unfortunately, we have not publish a English version, you can read it using google translate .

[1] https://juicefs.com/blog/cn/posts/globalegrow-big-data-platf...

Disclaimer: Founder of JuiceFS here.