RATIS-1620. Revert RATIS-1391 in branch 2.x

[kaijchen]

What changes were proposed in this pull request?

dropwizard.metrics is incompatible between 3.x and 4.x.
And we should not upgrade it in Ratis 2.x branch.

This reverts commit dbb4ffa.

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/RATIS-1620

How was this patch tested?

https://github.com/kaijchen/ratis/actions/runs/2647060883

[kaijchen]

Cc @codings-dan

[codings-dan]

branch-2 is a branch of the upcoming release 2.3.1, we plan to merge RATIS-1391 in 2.3.1, the current branch-2 still lacks two commit, see RATIS-1601 and RATIS-1614 . I will cherry-pick these commits later, so there may be no need to revert this commit. Thank you!

[kaijchen]

Thanks for the explanation. I noticed this issue from the "Planning for 3.0.0" mail.

2.x.x have been around for more than a year. How about we start working on
3.0.0 so that we can have incompatible changes? One of the motivations is
to merge https://issues.apache.org/jira/browse/RATIS-1391 "Update library
dropwizard.metrics version to 4.x" since dropwizard.metrics is incompatible
between 3.x and 4.x.

Seems you've found a way to solve this issue, isn't it?

[codings-dan]

@kaijchen In fact, I am not very familiar with this part. In my opinion, in order to prevent conflicts with application dependencies that depend on ratis, we shaded the dependency paths related to dropwizard in ratis, which seems to have solved the problem in the mail. Thank you!

[kaijchen]

OK, closing this.

[szetszwo]

Yes, we are using the shaded dropwizard.metrics now; see https://issues.apache.org/jira/browse/RATIS-1601 .

Just have merged it and other changes to branch-2.