* Standardize license headers in scala, python, and gradle files.
* Relocate copyright attribution to the NOTICE.
* Add a license header check to `spotless` for scala files.
Reviewers: Ewen Cheslack-Postava <ewencp@apache.org>, Matthias J. Sax <mjsax@apache.org>, A. Sophie Blee-Goldman <ableegoldman@apache.org
This patch changes the raft simulation tests to use jqwik, which is a property testing library. This provides two main benefits:
- It simplifies the randomization of test parameters. Currently the tests use a fixed set of `Random` seeds, which means that most builds are doing redundant work. We get a bigger benefit from allowing each build to test different parameterizations.
- It makes it easier to reproduce failures. Whenever a test fails, jqwik will report the random seed that failed. A developer can then modify the `@Property` annotation to use that specific seed in order to reproduce the failure.
This patch also includes an optimization for `MockLog.earliestSnapshotId` which reduces the time to run the simulation tests dramatically.
Reviewers: Ismael Juma <ismael@juma.me.uk>, Chia-Ping Tsai <chia7712@gmail.com>, José Armando García Sancio <jsancio@gmail.com>, David Jacot <djacot@confluent.io>
Verified that the https links work.
I didn't update the license header in this PR since that touches
so many files. Will file a separate one for that.
Reviewers: Manikumar Reddy <manikumar.reddy@gmail.com>
Author: Ewen Cheslack-Postava <me@ewencp.org>
Reviewers: Jason Gustafson <jason@confluent.io>, Guozhang Wang <wangguoz@gmail.com>
Closes#4529 from ewencp/update-NOTICE-year
John Roesler
Jason Gustafson
Mickael Maison
Bill Bejeck
Ismael Juma
Colin Patrick McCabe
Ewen Cheslack-Postava
Jun Rao
Gwen Shapira
Joe Stein
Neha Narkhede
Jakob Glen Homan
Edward Jay Kreps