Some progress here.
With other developers help(especially Nick, Andrew and Guanghao), I've
successfully made the release scripts able to publish binaries and
maven artifacts for hadoop3, in a dry run mode,
https://github.com/apache/hbase/pull/4856
I've put up a discussion thread, for quickly
Recently I've been working on HBASE-27359 together with some other
folks in the community(Nick, Andrew, Guanghao, etc.). After landing
some important improvements, such as HBASE-27434, HBASE-27442 and
more, now we are ready to make our release scripts able to publish
binaries for hadoop3.
