Hi Manikumar, We've gotten to the bottom of https://issues.apache.org/jira/browse/KAFKA-9212 and I think it should be a blocker. The impact of this bug is that consumers cannot make progress while a reassignment is in progress. The problem is missing logic in the controller to update its metadata cache following some of the leader epoch bumps. The fix is straightforward and should be ready shortly.
Thanks, Jason On Wed, Dec 4, 2019 at 9:10 PM Manikumar <manikumar.re...@gmail.com> wrote: > Hello Kafka users, developers and client-developers, > > This is the fourth candidate for release of Apache Kafka 2.4.0. > > This release includes many new features, including: > - Allow consumers to fetch from closest replica > - Support for incremental cooperative rebalancing to the consumer rebalance > protocol > - MirrorMaker 2.0 (MM2), a new multi-cluster, cross-datacenter replication > engine > - New Java authorizer Interface > - Support for non-key joining in KTable > - Administrative API for replica reassignment > - Sticky partitioner > - Return topic metadata and configs in CreateTopics response > - Securing Internal connect REST endpoints > - API to delete consumer offsets and expose it via the AdminClient. > > Release notes for the 2.4.0 release: > https://home.apache.org/~manikumar/kafka-2.4.0-rc3/RELEASE_NOTES.html > > *** Please download, test and vote by Monday, December 9th, 9 pm PT > > Kafka's KEYS file containing PGP keys we use to sign the release: > https://kafka.apache.org/KEYS > > * Release artifacts to be voted upon (source and binary): > https://home.apache.org/~manikumar/kafka-2.4.0-rc3/ > > * Maven artifacts to be voted upon: > https://repository.apache.org/content/groups/staging/org/apache/kafka/ > > * Javadoc: > https://home.apache.org/~manikumar/kafka-2.4.0-rc3/javadoc/ > > * Tag to be voted upon (off 2.4 branch) is the 2.4.0 tag: > https://github.com/apache/kafka/releases/tag/2.4.0-rc3 > > * Documentation: > https://kafka.apache.org/24/documentation.html > > * Protocol: > https://kafka.apache.org/24/protocol.html > > Thanks, > Manikumar >
