topic counts.
Introduces the use of persistent data structures in the KRaft metadata image to avoid copying the entire TopicsImage upon every change. Performance that was O(<number of topics in the cluster>) is now O(<number of topics changing>), which has dramatic time and GC improvements for the most common topic-related metadata events. We abstract away the chosen underlying persistent collection library via ImmutableMap<> and ImmutableSet<> interfaces and static factory methods.
Reviewers: Luke Chen <showuon@gmail.com>, Colin P. McCabe <cmccabe@apache.org>, Ismael Juma <ismael@juma.me.uk>, Purshotam Chauhan <pchauhan@confluent.io>
The following commands don't show any missings licenses
$ ./gradlewAll clean releaseTarGz
$ tar xzf core/build/distributions/kafka_2.13-3.3.0-SNAPSHOT.tgz
$ cd kafka_2.13-3.3.0-SNAPSHOT/
$ for f in $(ls libs | grep -v "^kafka\|connect\|trogdor"); do if ! grep -q ${f%.*} LICENSE; then echo "${f%.*} is missing in license file"; fi; done
One new dependency was missing a license entry ([jline](https://github.com/jline/jline3))
The rest of the changes correspond to updated package versions.
No functional changes in the code
Reviewers: Randall Hauch <rhauch@gmail.com>
Fixes the LICENSE files that we ship with our releases:
* the source-distribution license included wrong and unnecessary dependencies
* the binary-distribution license was missing most of our actual dependencies
Reviewers: A. Sophie Blee-Goldman <ableegoldman@apache.org>, Ewen Cheslack-Postava <ewencp@apache.org>, Justin Mclean <jmclean@apache.org>
Mickael Maison
Tanay Karmarkar
Ron Dagostino
José Armando García Sancio
Konstantine Karantasis
John Roesler