What's the successor of mrunit?

Question

Today I found out that the ASF retired mrunit (see https://blogs.apache.org/foundation/entry/the_apache_news_round_up85 and https://issues.apache.org/jira/browse/HADOOP-3733 and

Answer 1

Not exactly a successor, but I tried and tested a work-around with a bit of research. It is actually based on the Minicluster module of hadoop.

To find out how to use it, details can be found in this link here. And a github demo project exists here.