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From Dong Lin <lindon...@gmail.com>
Subject [VOTE] 2.1.0 RC1
Date Fri, 09 Nov 2018 23:33:11 GMT
Hello Kafka users, developers and client-developers,

This is the second candidate for feature release of Apache Kafka 2.1.0.

This is a major version release of Apache Kafka. It includes 28 new KIPs and

critical bug fixes. Please see the Kafka 2.1.0 release plan for more
details:

*https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=91554044*
<https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=91554044>

Here are a few notable highlights:

- Java 11 support
- Support for Zstandard, which achieves compression comparable to gzip with
higher compression and especially decompression speeds(KIP-110)
- Avoid expiring committed offsets for active consumer group (KIP-211)
- Provide Intuitive User Timeouts in The Producer (KIP-91)
- Kafka's replication protocol now supports improved fencing of zombies.
Previously, under certain rare conditions, if a broker became partitioned
from Zookeeper but not the rest of the cluster, then the logs of replicated
partitions could diverge and cause data loss in the worst case (KIP-320)
- Streams API improvements (KIP-319, KIP-321, KIP-330, KIP-353, KIP-356)
- Admin script and admin client API improvements to simplify admin
operation (KIP-231, KIP-308, KIP-322, KIP-324, KIP-338, KIP-340)
- DNS handling improvements (KIP-235, KIP-302)

Release notes for the 2.1.0 release:
http://home.apache.org/~lindong/kafka-2.1.0-rc0/RELEASE_NOTES.html

*** Please download, test and vote by Thursday, Nov 15, 12 pm PT ***

* Kafka's KEYS file containing PGP keys we use to sign the release:
http://kafka.apache.org/KEYS

* Release artifacts to be voted upon (source and binary):
http://home.apache.org/~lindong/kafka-2.1.0-rc1/

* Maven artifacts to be voted upon:
https://repository.apache.org/content/groups/staging/

* Javadoc:
http://home.apache.org/~lindong/kafka-2.1.0-rc1/javadoc/

* Tag to be voted upon (off 2.1 branch) is the 2.1.0-rc1 tag:
https://github.com/apache/kafka/tree/2.1.0-rc1

* Documentation:
*http://kafka.apache.org/21/documentation.html*
<http://kafka.apache.org/21/documentation.html>

* Protocol:
http://kafka.apache.org/21/protocol.html

* Successful Jenkins builds for the 2.1 branch:
Unit/integration tests: *https://builds.apache.org/job/kafka-2.1-jdk8/50/
<https://builds.apache.org/job/kafka-2.1-jdk8/50/>*

Please test and verify the release artifacts and submit a vote for this RC,
or report any issues so we can fix them and get a new RC out ASAP. Although
this release vote requires PMC votes to pass, testing, votes, and bug
reports are valuable and appreciated from everyone.

Cheers,
Dong

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