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KIP (please keep this sorted by KIP number)

Release

1KIP-531: Drop support for Scala 2.11 in Kafka 2.52.5.0 (WIP)
2KIP-528: Deprecate PartitionGrouper configuration and interface2.4.0
3KIP-525 - Return topic metadata and configs in CreateTopics response2.4.0 (WIP)
4KIP-524: Allow users to choose config source when describing configs2.45.0 (WIP)
5KIP-521: Enable redirection of Connect's log4j messages to a file by default2.4.0
6KIP-517: Add consumer metrics to observe user poll behavior2.4.0 (WIP)
7KIP-511: Collect and Expose Client's Name and Version in the Brokers2.4.0 (WIP)
8KIP-507: Securing Internal Connect REST Endpoints2.4.0
9KIP-504 - Add new Java Authorizer Interface2.4.0 (WIP)
10KIP-503: Add metric for number of topics marked for deletion2.4.0 (WIP)
11KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum
12KIP-497: Add inter-broker API to alter ISR2.45.0 (WIP)
13KIP-496: Administrative API to delete consumer offsets2.4.0 (WIP)
14KIP-495: Dynamically Adjust Log Levels in Connect2.4.0
15KIP-492: Add java security providers in Kafka Security config2.4.0 (WIP)
16KIP-488: Clean up Sum,Count,Total Metrics2.4.0
17KIP-484: Expose metrics for group and transaction metadata loading duration2.4.0 (WIP)
18KIP-482: The Kafka Protocol should Support Optional Tagged Fields2.4.0 (WIP)
19KIP-481: SerDe Improvements for Connect Decimal type in JSON2.4.0
20KIP-480: Sticky Partitioner2.4.0
21KIP-479: Add Materialized to Join2.4.0(WIP)
22KIP-476: Add Java AdminClient Interface2.4.0
23KIP-475: New Metrics to Measure Number of Tasks on a Connector2.4.0
24KIP-474: To deprecate WindowStore#put(key, value)2.4.0 (WIP)
25KIP-471: Expose RocksDB Metrics in Kafka Streams

2.4.0 (partially implemented) / 2.5.0

26KIP-470: TopologyTestDriver test input and output usability improvements2.4.0 (WIP)
27KIP-467: Augment ProduceResponse error messaging for specific culprit records2.4.0 (WIP)
28KIP-466: Add support for List<T> serialization and deserialization2.4.0
29KIP-465: Add Consolidated Connector Endpoint to Connect REST API2.3.0
30KIP-464: Defaults for AdminClient#createTopic2.4.0
31KIP-462: Use local thread id for KStreams2.3.0
32KIP-461: Improve Replica Fetcher behavior at handling partition failure2.3.0
33KIP-460: Admin Leader Election RPC2.4.0
34KIP-458: Connector Client Config Override Policy2.3.0
35KIP-455: Create an Administrative API for Replica Reassignment2.4.0 (WIP)
36KIP-454: Expansion of the ConnectClusterState interface2.3.0
37KIP-453: Add close() method to RocksDBConfigSetter2.3.0
38KIP-449: Add connector contexts to log messages in Connect workers 2.3.0
39KIP-446: Add changelog topic configuration to KTable suppress2.45.0 (WIP)
40KIP-445: In-memory Session Store2.3.0
41KIP-444: Augment metrics for Kafka Streams2.4.0 (WIP)
42

KIP-443: Return to default segment.ms and segment.index.bytes in Streams repartition topics

2.3.0
43KIP-442: Return to default max poll interval in Streams2.3.0
44KIP-440: Extend Connect Converter to support headers2.4.0
45KIP-436: Add a metric indicating start time2.3.0
46KIP-434: Add Replica Fetcher and Log Cleaner Count Metrics2.4.0 (WIP)
47KIP-430 - Return Authorized Operations in Describe Responses2.3.0
48KIP-429: Kafka Consumer Incremental Rebalance Protocol2.4.0 (WIP)
49KIP-428: Add in-memory window store2.3.0
50KIP-427: Add AtMinIsr topic partition category (new metric & TopicCommand option)2.3.0
51KIP-425: Add some Log4J Kafka Appender Properties for Producing to Secured Brokers2.3.0
52KIP-421: Support resolving externalized secrets in AbstractConfig2.3.0
53KIP-420: Add Single Value Fetch in Session Stores2.2.0
54KIP-417: Allow JmxTool to connect to a secured RMI port2.3.0
55KIP-415: Incremental Cooperative Rebalancing in Kafka Connect2.3.0
56KIP-414: Expose Embedded ClientIds in Kafka Streams2.2.0
57KIP-412: Extend Admin API to support dynamic application log levels2.4.0 (WIP)
58

KIP-411: Make default Kafka Connect worker task client IDs distinct

2.3.0
59KIP-402: Improve fairness in SocketServer processors2.2.0 (partially implemented) / 2.3.0
60KIP-401: TransformerSupplier/ProcessorSupplier StateStore connecting2.4.0 (WIP)
61KIP-396: Add Commit/List Offsets Operations to AdminClient2.4.0 (WIP)
62KIP-394: Require member.id for initial join group request2.2.0
63KIP-393: Time windowed serde to properly deserialize changelog input topic2.2.0
64KIP-389: Introduce a configurable consumer group size limit2.2.0
65KIP-386: Standardize on Min/Avg/Max metrics' default value2.2.0
66KIP-382: MirrorMaker 2.02.4.0
67

KIP-379: Multiple Consumer Group Management

2.4.0 (WIP)
68KIP-380: Detect outdated control requests and bounced brokers using broker generation2.2.0
69KIP-377: TopicCommand to use AdminClient2.2.0
70KIP-376: Implement AutoClosable on appropriate classes that want to be used in a try-with-resource statement2.2.0
71KIP-374: Add '--help' option to all available Kafka CLI commands2.2.0
72KIP-372: Naming Repartition Topics for Joins and Grouping2.1.0
73KIP-371: Add a configuration to build custom SSL principal name2.2.0
74KIP-369: Alternative Partitioner to Support "Always Round-Robin" Selection2.4.0
75KIP 368: Allow SASL Connections to Periodically Re-Authenticate2.2.0
76KIP-367 Introduce close(Duration) to Producer and AdminClient instead of close(long, TimeUnit)2.2.0
77KIP-366: Make FunctionConversions deprecated2.1.0
78KIP-365: Materialized, Serialized, Joined, Consumed and Produced with implicit Serde2.1.0
79KIP-361: Add Consumer Configuration to Disable Auto Topic Creation2.3.0
80KIP-360: Improve handling of unknown producer2.4.0 (WIP)
81KIP-359: Verify leader epoch in produce requests2.4.0 (WIP)
82KIP-358: Migrate Streams API to Duration instead of long ms times2.1.0
83KIP-357: Add support to list ACLs per principal2.1.0
84KIP-356: Add withCachingDisabled() to StoreBuilder2.1.0
85KIP-354: Add a Maximum Log Compaction Lag2.3.0
86KIP-353: Improve Kafka Streams Timestamp Synchronization2.1.0
87KIP-352: Distinguish URPs caused by reassignment2.4.0 (WIP)
88KIP-351: Add --under-min-isr option to describe topics command2.3.0
89KIP-346: Improve LogCleaner behavior on error2.1
90KIP-345: Introduce static membership protocol to reduce consumer rebalances2.4.0 (WIP), partially available in 2.3.0
91KIP-342 Add support for custom SASL extensions in OAuthBearer authentication2.1.0
92KIP-341: Update Sticky Assignor's User Data Protocol2.3.0
93KIP-340: Allow kafka-reassign-partitions.sh and kafka-log-dirs.sh to take admin client property file2.1.0
94KIP-339: Create a new IncrementalAlterConfigs API2.3.0 
95KIP-338 Support to exclude the internal topics in kafka-topics.sh command2.1.0
96KIP-336: Consolidate ExtendedSerializer/Serializer and ExtendedDeserializer/Deserializer2.1.0
97KIP-332: Update AclCommand to use AdminClient API2.1.0
98KIP-331 Add default implementation to close() and configure() for Serializer, Deserializer and Serde2.3.0
99KIP-330: Add retentionPeriod in SessionBytesStoreSupplier2.1.0
100KIP-328: Ability to suppress updates for KTables2.1.0 (partially implemented) / 2.3.0 (WIP)
101KIP-324: Add method to get metrics() in AdminClient2.1.0
102KIP-322: Return new error code for DeleteTopics API when topic deletion disabled.2.1.0
103KIP-321: Update TopologyDescription to better represent Source and Sink Nodes2.1.0
104KIP-320: Allow fetchers to detect and handle log truncation2.1.0 (partially implemented) / 2.2.0
105KIP-319: Replace segments with segmentInterval in WindowBytesStoreSupplier2.1.0
106KIP-313: Add KStream.flatTransform and KStream.flatTransformValues 

2.2.0 (partially implemented)

/ 2.3.0

107KIP-312 Add Overloaded StreamsBuilder Build Method to Accept java.util.Properties2.1.0
108KIP-309: Add toUpperCase support to sasl.kerberos.principal.to.local rule2.4.0
109KIP-308: Support dynamic update of max.connections.per.ip/max.connections.per.ip.overrides2.1.0
110KIP-307: Allow to define custom processor names with KStreams DSL2.3.0 (partial)
111KIP-306: Configuration for Delaying Response to Failed Authentication2.1.0
112KIP-305: Add Connect primitive number converters2.0.0
113KIP-303: Add Dynamic Routing in Streams Sink2.0.0
114KIP-302 - Enable Kafka clients to use all DNS resolved IP addresses2.1.0
115KIP-300: Add Windowed KTable API in StreamsBuilder3.0.0 (WIP)
116KIP-298: Error Handling in Connect2.0.0
117KIP-297: Externalizing Secrets for Connect Configurations2.0.0
118KIP-295 Add Streams Configuration Allowing for Optional Topology Optimization2.0.0
119KIP-294 - Enable TLS hostname verification by default2.0.0
120

KIP-291: Separating controller connections and requests from the data plane

Accepted
121KIP-292: Add transformValues() method to KTable2.0.0
122KIP-290: Support for Prefixed ACLs2.0.0
123KIP-289: Improve the default group id behavior in KafkaConsumer2.2.0
124KIP-285: Connect Rest Extension Plugin2.0.0
125KIP-284: Set default retention ms for Streams repartition topics to Long.MAX_VALUE2.0.0
126KIP-283: Efficient Memory Usage for Down-Conversion2.0.0
127KIP-282: Add the listener name to the authentication context2.0.0
128KIP-281: ConsumerPerformance: Increase Polling Loop Timeout and Make It Reachable by the End User2.0.0
129KIP-279: Fix log divergence between leader and follower after fast leader fail over2.0.0
130KIP-278 - Add version option to Kafka's commands2.0.0
131KIP-277 - Fine Grained ACL for CreateTopics API2.0.0
132KIP-276 - Add StreamsConfig prefix for different consumers2.0.0
133KIP-274: Kafka Streams Skipped Records Metrics2.0.0
134KIP-272: Add API version tag to broker's RequestsPerSec metric2.0.0
135KIP-270 - A Scala Wrapper Library for Kafka Streams2.0.0
136KIP-268: Simplify Kafka Streams Rebalance Metadata Upgrade2.0.0
137KIP-267: Add Processor Unit Test Support to Kafka Streams Test Utils2.0.0
138KIP-266: Fix consumer indefinite blocking behavior2.0.0
139KIP-265: Make Windowed Serde to public APIs2.0.0
140KIP-261: Add Single Value Fetch in Window Stores2.0.0
141KIP-258: Allow to Store Record Timestamps in RocksDB2.3.0 (partially implemented)
142KIP-257 - Configurable Quota Management2.0.0
143KIP-255: OAuth Authentication via SASL/OAUTHBEARER2.0.0
144KIP-251: Allow timestamp manipulation in Processor API2.0.0
145KIP-249: Add Delegation Token Operations to KafkaAdminClient2.0.0
146KIP-247: Add public test utils for Kafka Streams1.1.0
147KIP-245: Use Properties instead of StreamsConfig in KafkaStreams constructor2.0.0
148KIP-244: Add Record Header support to Kafka Streams Processor API2.0.0
149KIP-243: Make ProducerConfig and ConsumerConfig constructors public1.1.0
150KIP-239 Add queryableStoreName() to GlobalKTable1.1.0
151KIP-238: Expose Kafka cluster ID in Connect REST API1.1.0
152KIP-237: More Controller Health Metrics2.0.0
153KIP-235: Add DNS alias support for secured connection2.1.0
154KIP-233: Simplify StreamsBuilder#addGlobalStore1.1.0
155KIP-231: Improve the Required ACL of ListGroups API2.1.0
156KIP-229: DeleteGroups API1.1.0
157KIP-227 - Introduce Incremental FetchRequests to Increase Partition Scalability1.1.0
158KIP-226 - Dynamic Broker Configuration1.1.0
159KIP-225 - Use tags for consumer “records.lag” metrics1.1.0
160KIP-224: Add configuration parameter `retries` to Streams API1.1.0
161KIP-223 - Add per-topic min lead and per-partition lead metrics to KafkaConsumer2.0.0
162KIP-222 - Add Consumer Group operations to Admin API2.0.0
163KIP-221: Enhance DSL with Connecting Topic Creation and Repartition Hint2.4.0 (WIP)
164KIP-220: Add AdminClient into Kafka Streams' ClientSupplier1.1.0
165KIP-219 - Improve quota communication2.0.0
166KIP-218: Make KafkaFuture.Function java 8 lambda compatible1.1.0
167KIP-215: Add topic regex support for Connect sinks1.1.0
168KIP-214: Add zookeeper.max.in.flight.requests config to the broker1.1.0
169KIP-213 Support non-key joining in KTable2.4.0 (WIP)
170KIP-212: Enforce set of legal characters for connector names1.1.0
171KIP-211: Revise Expiration Semantics of Consumer Group Offsets2.1.0
172KIP-210 - Provide for custom error handling when Kafka Streams fails to produce1.1.0
173KIP-208: Add SSL support to Kafka Connect REST interface1.1.0
174KIP-207: Offsets returned by ListOffsetsResponse should be monotonically increasing even during a partition leader change2.2.0
175KIP-206: Add support for UUID serialization and deserialization2.1.0
176KIP-205: Add all() and range() API to ReadOnlyWindowStore1.1.0
177KIP-204 : Adding records deletion operation to the new Admin Client API1.1.0
178KIP-203: Add toLowerCase support to sasl.kerberos.principal.to.local rule 1.1.0
179KIP-202: Move merge() from StreamsBuilder to KStream1.0.0
180KIP-198: Remove ZK dependency from Streams Reset Tool1.0.0
181KIP-197 Connect REST API should include the connector type when describing a connector1.0.0
182KIP-196: Add metrics to Kafka Connect framework1.0.0
183KIP-195: AdminClient.createPartitions1.0.0
184KIP-192 : Provide cleaner semantics when idempotence is enabled1.0.0
185KIP-191: KafkaConsumer.subscribe() overload that takes just Pattern1.0.0
186KIP-190: Handle client-ids consistently between clients and brokers1.0.0
187KIP-189: Improve principal builder interface and add support for SASL1.0.0
188KIP-188 - Add new metrics to support health checks1.0.0
189KIP-187 - Add cumulative count metric for all Kafka rate metrics1.0.0
190KIP-186: Increase offsets retention default to 7 days2.0.0
191KIP-183 - Change PreferredReplicaLeaderElectionCommand to use AdminClient2.2.0
192KIP-182: Reduce Streams DSL overloads and allow easier use of custom storage engines1.0.0
193KIP-180: Add a broker metric specifying the number of consumer group rebalances in progress1.1.0
194KIP-177: Consumer perf tool should count rebalance time1.0.0
195KIP-176: Remove deprecated new-consumer option for tools2.0.0
196KIP-175: Additional '--describe' views for ConsumerGroupCommand1.1.0
197KIP-174 - Deprecate and remove internal converter configs in WorkerConfig2.0.0
198KIP-173: Add prefix to StreamsConfig to enable setting default internal topic configs1.0.0
199KIP-171 - Extend Consumer Group Reset Offset for Stream Application1.1.0
200KIP-168: Add GlobalTopicCount and GlobalPartitionCount metric per cluster1.0.0
201KIP-167: Add interface for the state store restoration process1.0.0
202

KIP-164 - Add UnderMinIsrPartitionCount and per-partition UnderMinIsr metrics

1.0.0
203

KIP-163: Lower the Minimum Required ACL Permission of OffsetFetch

1.0.0
204KIP-162: Enable topic deletion by default1.0.0
205KIP-161: streams deserialization exception handlers1.0.0
206KIP-160: Augment KStream.print(), KStream.writeAsText() to allow users pass in extra parameters in the printed string1.0.0
207KIP-157 - Add consumer config options to streams reset tool1.0.0
208KIP-156 Add option "dry run" to Streams application reset tool0.11.0.0
209KIP-155 - Add range scan for windowed state stores0.11.0.0
210KIP-154 Add Kafka Connect configuration properties for creating internal topics0.11.0.0
211KIP-153: Include only client traffic in BytesOutPerSec metric0.11.0.0
212KIP-152 - Improve diagnostics for SASL authentication failures1.0.0
213KIP-151 Expose Connector type in REST API0.11.0.0
214KIP-150 - Kafka-Streams Cogroup2.5.0 (WIP)
215KIP-149: Enabling key access in ValueTransformer, ValueMapper, and ValueJoiner1.1.0 (partially implemented)
(WIP for 2.4.0)
216KIP-146 - Classloading Isolation in Connect

0.11.0.0

217KIP-145 - Expose Record Headers in Kafka Connect1.1.0
218KIP-144: Exponential backoff for broker reconnect attempts0.11.0.0
219KIP-143: Controller Health Metrics0.11.0.0
220KIP-140: Add administrative RPCs for adding, deleting, and listing ACLs0.11.0.0
221KIP-138: Change punctuate semantics1.0.0
222KIP-137: Enhance TopicCommand --describe to show topics marked for deletion0.11.0.0
223KIP-136: Add Listener name to SelectorMetrics tags0.11.0.0
224KIP-134: Delay initial consumer group rebalance0.11.0.0
225KIP-133: Describe and Alter Configs Admin APIs0.11.0.0
226KIP-130: Expose states of active tasks to KafkaStreams public API1.0.0
227KIP-129: Streams Exactly-Once Semantics0.11.0.0
228KIP-128: Add ByteArrayConverter for Kafka Connect0.11.0.0
229KIP-126 - Allow KafkaProducer to split and resend oversized batches.0.11.0.0
230KIP-124 - Request rate quotas0.11.0.0
231KIP-123: Allow per stream/table timestamp extractor0.11.0.0
232KIP-122: Add Reset Consumer Group Offsets tooling0.11.0.0
233KIP-121: Add KStream peek method

0.11.0.0

234KIP-120: Cleanup Kafka Streams builder API1.0.0
235KIP-119: Drop Support for Scala 2.10 in Kafka 0.110.11.0.0
236KIP-118: Drop Support for Java 72.0.0
237KIP-117: Add a public AdminClient API for Kafka admin operations0.11.0.0
238KIP-115: Enforce offsets.topic.replication.factor upon __consumer_offsets auto topic creation0.11.0.0
239KIP-114: KTable state stores and improved semantics0.11.0.0
240KIP-113: Support replicas movement between log directories1.1.0
241KIP-112: Handle disk failure for JBOD1.0.0
242KIP-110: Add Codec for ZStandard Compression2.1.0
243KIP-109: Old Consumer Deprecation0.11.0.0
244KIP-108: Create Topic Policy0.10.2.0
245KIP-107: Add deleteRecordsBefore() API in AdminClient0.11.0.0
246

KIP-106 - Change Default unclean.leader.election.enabled from True to False

0.11.0.0
247KIP-105: Addition of Record Level for Sensors0.10.2.0
248KIP-104: Granular Sensors for Streams 0.10.2.0
249KIP-103: Separation of Internal and External traffic0.10.2.0
250KIP-102 - Add close with timeout for consumers0.10.2.0
251KIP-101 - Alter Replication Protocol to use Leader Epoch rather than High Watermark for Truncation0.11.0.0
252KIP-100 - Relax Type constraints in Kafka Streams API0.10.2.0
253KIP-99: Add Global Tables to Kafka Streams0.10.2.0
254KIP-98 - Exactly Once Delivery and Transactional Messaging0.11.0.0
255KIP-97: Improved Kafka Client RPC Compatibility Policy0.10.2.0
256KIP-96 - Add per partition metrics for in-sync and assigned replica count0.10.2.0
257KIP-94 Session Windows0.10.2.0
258KIP-93: Improve invalid timestamp handling in Kafka Streams0.10.2.0
259KIP-92 - Add per partition lag metrics to KafkaConsumer0.10.2.0
260KIP-91 Provide Intuitive User Timeouts in The Producer2.1.0
261KIP-90 - Remove zkClient dependency from Streams0.10.2.0
262KIP-89: Allow sink connectors to decouple flush and offset commit0.10.2.0
263KIP-88: OffsetFetch Protocol Update0.10.2.0
264KIP-86: Configurable SASL callback handlers2.0.0
265KIP-85: Dynamic JAAS configuration for Kafka clients0.10.2.0
266KIP-84: Support SASL SCRAM mechanisms0.10.2.0
267KIP-82 - Add Record Headers0.11.0.0
268KIP-81: Bound Fetch memory usage in the consumer2.4.0 (WIP)
269KIP-79 - ListOffsetRequest/ListOffsetResponse v1 and add timestamp search methods to the new consumer0.10.1.0
270KIP-78: Cluster Id0.10.1.0
271KIP-77: Improve Kafka Streams Join Semantics0.10.2.0
272KIP-75 - Add per-connector Converters0.10.1.0
273KIP-74: Add Fetch Response Size Limit in Bytes0.10.1.0
274KIP-73: Replication Quotas0.10.1.0
275KIP-72: Allow putting a bound on memory consumed by Incoming request 1.0.0
276KIP-71: Enable log compaction and deletion to co-exist0.10.1.0
277KIP-70: Revise Partition Assignment Semantics on New Consumer's Subscription Change0.10.1.0
278KIP-67: Queryable state for Kafka Streams0.10.1.0
279KIP-66: Single Message Transforms for Kafka Connect0.10.2.0 / 0.11.0.0
280KIP-65: Expose timestamps to Connect0.10.1.0
281KIP-63: Unify store and downstream caching in streams0.10.1.0
282KIP-62: Allow consumer to send heartbeats from a background thread0.10.1.0
283KIP-60 - Make Java client classloading more flexible0.10.1.0
284KIP-58 - Make Log Compaction Point Configurable0.10.1.0
285KIP-57 - Interoperable LZ4 Framing0.10.0.0
286KIP-56: Allow cross origin HTTP requests on all HTTP methods0.10.0.0
287KIP-55: Secure Quotas for Authenticated Users0.10.1.0
288KIP-54: Sticky Partition Assignment Strategy0.11.0.0
289KIP-52: Connector Control APIs0.10.0.0
290KIP-51 - List Connectors REST API0.10.0.0
291KIP-48 Delegation token support for Kafka1.1.0
292KIP-45 - Standardize all client sequence interaction on j.u.Collection.0.10.0.0
293KIP-43: Kafka SASL enhancements0.10.0.0
294KIP-42: Add Producer and Consumer Interceptors0.10.0.0
295KIP-41: Consumer Max Records0.10.0.0
296KIP-40: ListGroups and DescribeGroup0.9.0.0
297KIP-38: ZooKeeper Authentication0.9.0.0
298KIP-36 - Rack aware replica assignment0.10.0.0
299KIP-35 - Retrieving protocol version0.10.0.0
300KIP-33 - Add a time based log index0.10.1.0
301KIP-32 - Add timestamps to Kafka message0.10.0.0
302KIP-31 - Move to relative offsets in compressed message sets0.10.0.0
303KIP-28 - Add a processor client0.10.0.0
304KIP-26 - Add Kafka Connect framework for data import/export0.9.0.0
305KIP-25 - System test improvements0.9.0.0
306KIP-22 - Expose a Partitioner interface in the new producer0.9.0.0
307KIP-21 - Dynamic Configuration0.9.0.0 (WIP)
308KIP-20 Enable log preallocate to improve consume performance under windows and some old Linux file system0.9.0.0
309KIP-19 - Add a request timeout to NetworkClient0.9.0.0
310KIP-16 - Automated Replica Lag Tuning0.9.0.0
311KIP-15 - Add a close method with a timeout in the producer0.9.0.0
312KIP-13 - Quota Design0.9.0.0
313KIP-12 - Kafka Sasl/Kerberos and SSL implementation0.9.0.0
314KIP-11 - Kafka Authorizer design0.9.0.0
315KIP-8 - Add a flush method to the producer API0.9.0.0
316KIP-4 - Metadata Protocol Changes0.10.0.0
317KIP-4 - Command line and centralized administrative operations0.9.0.0, 0.10.0.0, 0.10.1.0
318KIP-3 - Mirror Maker Enhancement0.9.0.0
319KIP-2 - Refactor brokers to allow listening on multiple ports and IPs0.9.0.0
320KIP-1 - Remove support of request.required.acks0.9.0.0

...