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stanislavkozlovski pushed a commit to branch 37blog
in repository https://gitbox.apache.org/repos/asf/kafka-site.git
commit 35a7bc81b9b0562902b593428e601089c5f87d29
Author: Stanislav <stanis...@confluent.io>
AuthorDate: Wed Jan 10 23:07:13 2024 +0100
3.7: Add 3.7 release announcement blog post
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<!--#include virtual="includes/_nav.htm" -->
<div class="right">
<h1 class="content-title">Blog</h1>
+ <article>
+ <h2 class="bullet">
+ <a id="apache_kafka_370_release_announcement"></a>
+ <a href="#apache_kafka_370_release_announcement">Apache
Kafka 3.7.0 Release Announcement</a>
+ </h2>
+ TODO: January 2024 - Stanislav Kozlovski (<a
href="https://twitter.com/0xeed";>@BdKozlovski</a>)
+ <p>We are proud to announce the release of Apache Kafka 3.7.0.
This release contains many new features and improvements. This blog post will
highlight some of the more prominent features. For a full list of changes, be
sure to check the <a
href="https://downloads.apache.org/kafka/3.7.0/RELEASE_NOTES.html";>release
notes</a>.</p>
+ <p>See the <a
href="https://kafka.apache.org/36/documentation.html#upgrade_3_7_0";>Upgrading
to 3.7.0 from any version 0.8.x through 3.6.x</a> section in the documentation
for the list of notable changes and detailed upgrade steps.</p>
+ <p>
+ In the last release, 3.6,
+ <a
href="https://kafka.apache.org/documentation/#kraft_zk_migration";>the ability
to migrate Kafka clusters from a ZooKeeper metadata system</a>
+ to a KRaft metadata system was ready for usage in
production environments with one caveat - JBOD was not yet available for KRaft
clusters.
+ This release, 3.7, we are shipping support for JBOD in
KRaft. (See <a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-858%3A+Handle+JBOD+broker+disk+failure+in+KRaft";>KIP-858</a>
for details)
+ </p>
+ <p>
+ <i>Note: ZooKeeper is marked as deprecated since the 3.5.0
release. ZooKeeper is planned to be removed in Apache Kafka 4.0. For more
information, please see the documentation for <a
href="https://kafka.apache.org/documentation/#zk_depr";>ZooKeeper
Deprecation</a></i>
+ </p>
+
+ <h3>Kafka Broker, Controller, Producer, Consumer and Admin
Client</h3>
+ <ul>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-858%3A+Handle+JBOD+broker+disk+failure+in+KRaft";>KIP-858</a>:
+ Handle JBOD broker disk failure in KRaft: </b><br>Adds
JBOD support in KRaft-based clusters.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-714%3A+Client+metrics+and+observability";>KIP-714</a>:
+ Client metrics and observability: </b><br>Introduces a
standardized interface to receive client metrics on the broker for better
monitoring.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-1000%3A+List+Client+Metrics+Configuration+Resources";>KIP-1000</a>:
+ List Client Metrics Configuration Resources:
</b><br>Introduces a new AdminAPI to list out the client’s metric resources
that are available in the cluster.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-848%3A+The+Next+Generation+of+the+Consumer+Rebalance+Protocol";>(Early
Access) KIP-848</a>:
+ The Next Generation of the Consumer Rebalance
Protocol: </b><br>The new simplified Consumer Rebalance Protocol moves
complexity away from the consumer and into the Group Coordinator broker and
completely revamps the protocol to be incremental in nature.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-951%3A+Leader+discovery+optimisations+for+the+client";>KIP-951</a>:
+ Leader discovery optimisations for the client:
</b><br> Optimizes the time it takes for a client to discover the new leader of
a partition, leading to reduced end-to-end latency of produce/fetch requests in
the presence of leadership changes (broker restarts, partition reassignments,
etc.)
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-975%3A+Docker+Image+for+Apache+Kafka";>KIP-975</a>:
+ Docker Image for Apache Kafka: </b><br>Introduces an
official Apache Kafka Docker image, enabling quicker testing and deployment, as
well as onboarding of developers.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-580%3A+Exponential+Backoff+for+Kafka+Clients";>KIP-580</a>:
+ Exponential Backoff for Kafka Clients: </b><br>Changes
the client’s retry backoff time used for retrying failed requests from a static
one to an exponentially-increasing one. This should help reduce slow metadata
convergence after broker failure due to overload.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-963%3A+Additional+metrics+in+Tiered+Storage";>KIP-963</a>:
+ Additional metrics in Tiered Storage:
</b><br>Introduces new metrics for Tiered Storage, allow you to better monitor
the performance of the Early Access feature
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-979%3A+Allow+independently+stop+KRaft+processes";>KIP-979</a>:
+ Allow independently stop KRaft processes: </b><br>Adds
a way to independently stop KRaft processes in cases where operators are
running in combined mode (a controller and broker in the same node).
Previously, you had to stop both.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-890%3A+Transactions+Server-Side+Defense";>KIP-890</a>:
+ Transactions Server-Side Defense: </b><br>Another part
of this KIP shipped, this time adding transaction verification preventing
hanging transactions for consumer offset partitions.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-896%3A+Remove+old+client+protocol+API+versions+in+Kafka+4.0";>KIP-896</a>:
+ Remove old client protocol API versions in Kafka 4.0:
</b><br>Remove old client protocol API versions in Kafka 4.0.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-919%3A+Allow+AdminClient+to+Talk+Directly+with+the+KRaft+Controller+Quorum+and+add+Controller+Registration";>KIP-919</a>:
+ Allow AdminClient to Talk Directly with the KRaft
Controller Quorum and add Controller Registration: </b><br>Allows the
AdminClient to talk directly with the KRaft Controller Quorum, helping with
debugging scenarios where other parts of the system are down.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=263429128";>KIP-978</a>:
+ Allow dynamic reloading of certificates with different
DN / SANs: </b><br>Allows configurability to prevent checks that ensure DN
(Distinguished Name) and SAN (Subject Alternative Names) are the same between
old and new keystores when they’re being reload. This ultimately allows dynamic
reloading of certificates that have different DN/SANs.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-1001%3A+Add+CurrentControllerId+Metric";>KIP-1001</a>:
+ Add CurrentControllerId Metric: </b><br>Adds a
CurrentControllerId metric, allowing users to find the current controller by
looking at the metrics of any Kafka broker/controller.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-938%3A+Add+more+metrics+for+measuring+KRaft+performance";>KIP-938</a>:
+ Add more metrics for measuring KRaft performance:
</b><br>Adds 11 new metrics for measuring KRaft-mode performance.
+ </li>
+ </ul>
+ <h3>Kafka Streams</h3>
+ <ul>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-925%3A+Rack+aware+task+assignment+in+Kafka+Streams";>KIP-925</a>:
+ Rack aware task assignment in Kafka Streams:
</b><br>Completes the KIP by finishing part 2 - introducing the second
rack-aware assignment strategy to Kafka streams - balanced_subtopology.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-954%3A+expand+default+DSL+store+configuration+to+custom+types";>KIP-954</a>:
+ Expand default DSL store configuration to custom
types: </b><br>Builds on KIP-951, allowing users to provide a custom state
store provider with a new interface. By default, RocksDB and in-memory state
stores are supported.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-988%3A+Streams+Standby+Update+Listener";>KIP-988</a>:
+ Streams Standby Update Listener: </b><br>Adds a new
interface for handling cases where standby tasks have their a) state stores
registered, b) load a batch of records and c) stop updates.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-960%3A+Support+single-key_single-timestamp+interactive+queries+%28IQv2%29+for+versioned+state+stores";>KIP-960</a>:
+ Support single-key_single-timestamp interactive
queries (IQv2) for versioned state stores: </b><br>Adds single-key /
single-timestamp interactive queries for versioned state stores.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-968%3A+Support+single-key_multi-timestamp+interactive+queries+%28IQv2%29+for+versioned+state+stores";>KIP-968</a>:
+ Support single-key_multi-timestamp interactive queries
(IQv2) for versioned state stores: </b><br>Adds single-key / multi-timestamp
interactive queries for versioned state stores.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-985%3A+Add+reverseRange+and+reverseAll+query+over+kv-store+in+IQv2";>KIP-985</a>:
+ Add reverseRange and reverseAll query over kv-store in
IQv2: </b><br>Adds reverseRange and reverseAll interactive queries for
versioned state stores.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-992%3A+Proposal+to+introduce+IQv2+Query+Types%3A+TimestampedKeyQuery+and+TimestampedRangeQuery";>KIP-992</a>:
+ Proposal to introduce IQv2 Query Types:
TimestampedKeyQuery and TimestampedRangeQuery: </b><br>Adds new timestamped-key
and timestamped-range interactive queries for versioned state stores.
+ </li>
+ </ul>
+ <h3>Kafka Connect</h3>
+ <ul>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-976%3A+Cluster-wide+dynamic+log+adjustment+for+Kafka+Connect";>KIP-976</a>:
+ Cluster-wide dynamic log adjustment for Kafka Connect:
</b><br>Allows adjusting every Connect Worker’s log levels dynamically in a
single broadcast.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-980%3A+Allow+creating+connectors+in+a+stopped+state";>KIP-980</a>:
+ Allow creating connectors in a stopped state:
</b><br>Allows creating new Connectors in a STOPPED or PAUSED state, enabling
use cases like migrating connectors.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-959%3A+Add+BooleanConverter+to+Kafka+Connect";>KIP-959</a>:
+ Add BooleanConverter to Kafka Connect: </b><br>Adds a
BooleanConverter to Connect, supporting serializing and deserializing the
boolean primitive in a Kafka Connect schema.
+ </li>
+ <li><b><a
href="https://cwiki.apache.org/confluence/display/KAFKA/KIP-970%3A+Deprecate+and+remove+Connect%27s+redundant+task+configurations+endpoint";>KIP-970</a>:
+ Deprecate and remove Connect's redundant task
configurations endpoint: </b><br>Deprecates a redundant endpoint for fetching
task configurations, eventually to be removed in Apache Kafka 4.0.
+ </li>
+
+ </ul>
+ <h3>Summary</h3>
+ <p>Ready to get started with Apache Kafka 3.7.0? Check out all
the details in the <a
href="https://archive.apache.org/dist/kafka/3.7.0/RELEASE_NOTES.html";>release
notes</a> and <a href="https://kafka.apache.org/downloads";>download</a> Apache
Kafka 3.7.0.</p>
+
+ <p>This was a community effort, so thank you to everyone who
contributed to this release, including all our users and our 157 contributors:
<br>
+ A. Sophie Blee-Goldman, Abhijeet Kumar, Akhilesh Chaganti,
Alieh, Alieh Saeedi, Almog Gavra, Alok Thatikunta, Alyssa Huang, Aman Singh,
Andras Katona, Andrew Schofield, Anna Sophie Blee-Goldman, Anton Agestam,
Apoorv Mittal, Arnout Engelen, Arpit Goyal, Artem Livshits, Ashwin Pankaj,
ashwinpankaj, atu-sharm, bachmanity1, Bob Barrett, Bruno Cadonna, Calvin Liu,
Cerchie, chern, Chris Egerton, Christo Lolov, Colin P. McCabe, Colin Patrick
McCabe, Colt McNealy, Crispin Be [...]
+ </p>
+ </article>
<article>
<h2 class="bullet">
<a id="apache_kafka_352_release_announcement"></a>
