Page History

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	KIP (please keep this sorted by KIP number)	Release
1	KIP-588: Allow producers to recover gracefully from transaction timeouts	2.6.0 (WIP)
2	KIP-584: Versioning scheme for features	2.6.0 (WIP)
3	KIP-580: Exponential Backoff for Kafka Clients	2.6.0 (WIP)
4	KIP-574: CLI Dynamic Configuration with file input	2.6.0
5	KIP-570: Add leader epoch in StopReplicaRequest	2.6.0
6	KIP-569: DescribeConfigsResponse - Update the schema to include additional metadata information of the field	2.6.0 (WIP)
7	KIP-568: Explicit rebalance triggering on the Consumer	2.6.0 (WIP)
8	KIP-562: Allow fetching a key from a single partition rather than iterating over all the stores on an instance	2.5.0
9	KIP-559: Make the Kafka Protocol Friendlier with L7 Proxies	2.5.0
10	KIP-558: Track the set of actively used topics by connectors in Kafka Connect	2.5.0
11	KIP-557: Add emit on change support for Kafka Streams	2.6.0 (WIP)
12	KIP-555: Deprecate direct Zookeeper access in Kafka administrative tools	2.5.0
13	KIP-553: Disable all SSL protocols except TLSV1.2 by default.	2.5.0
14	KIP-551: Expose disk read and write metrics	2.6.0 (WIP)
15	KIP-546: Add Client Quota APIs to the Admin Client	initial version in 2.6.0, full implementation in a later release
16	KIP-544: Make metrics exposed via JMX configurable	2.5.0
17	KIP-543: Expand ConfigCommand's non-ZK functionality	2.5.0
18	KIP-541: Create a fetch.max.bytes configuration for the broker	2.5.0
19	KIP-538: Add a metric tracking the number of open connections with a given SSL cipher type	2.5.0
20	KIP-537: Increase default zookeeper session timeout	2.5.0
21	KIP-535: Allow state stores to serve stale reads during rebalance	2.5.0
22	KIP-534: Reorganize checkpoint system in log cleaner to per partition	WIP
23	KIP-533: Add default api timeout to AdminClient	2.5.0
24	KIP-532: Broker Consumer Lag metrics in size and time	WIP
25	KIP-531: Drop support for Scala 2.11 in Kafka 2.5	2.5.0 (WIP)
26	KIP-530: Consider renaming 'UsePreviousTimeOnInvalidTimeStamp' class to 'UsePartitionTimeOnInvalidTimeStamp'	2.5.0
27	KIP-528: Deprecate PartitionGrouper configuration and interface	2.4.0
28	KIP-527: Add VoidSerde to Serdes	2.5.0
29	KIP-526: Reduce Producer Metadata Lookups for Large Number of Topics	2.5.0
30	KIP-525 - Return topic metadata and configs in CreateTopics response	2.4.0
31	KIP-524: Allow users to choose config source when describing configs	2.5.0
32	KIP-523: Add KStream#toTable to the Streams DSL	2.5.0
33	KIP-521: Enable redirection of Connect's log4j messages to a file by default	2.4.0
34	KIP-519: Make SSL context/engine configuration extensible	Accepted
35	KIP-518: Allow listing consumer groups per state	2.6.0 (WIP)
36	KIP-517: Add consumer metrics to observe user poll behavior	2.4.0
37	KIP-515: Enable ZK client to use the new TLS supported authentication	2.5.0
38	KIP-514:Add a bounded flush() API to Kafka Producer	2.5.0
39	KIP-511: Collect and Expose Client's Name and Version in the Brokers	2.4.0 (protocol) / 2.5.0 (metric)
40	KIP-507: Securing Internal Connect REST Endpoints	2.4.0
41	KIP-504 - Add new Java Authorizer Interface	2.4.0
42	KIP-503: Add metric for number of topics marked for deletion	2.4.0
43	KIP-501: Avoid out-of-sync or offline partitions when follower fetch requests not processed in time	WIP
44	KIP-500: Replace ZooKeeper with a Self-Managed Metadata Quorum
45	KIP-497: Add inter-broker API to alter ISR	2.6.0 (WIP)
46	KIP-496: Administrative API to delete consumer offsets	2.4.0
47	KIP-495: Dynamically Adjust Log Levels in Connect	2.4.0
48	KIP-492: Add java security providers in Kafka Security config	2.4.0
49	KIP-488: Clean up Sum,Count,Total Metrics	2.4.0
50	KIP-484: Expose metrics for group and transaction metadata loading duration	2.4.0
51	KIP-482: The Kafka Protocol should Support Optional Tagged Fields	2.4.0
52	KIP-481: SerDe Improvements for Connect Decimal type in JSON	2.4.0
53	KIP-480: Sticky Partitioner	2.4.0
54	KIP-479: Add StreamJoined config object to Join	2.4.0
55	KIP-478 - Strongly typed Processor API	WIP
56	KIP-476: Add Java AdminClient Interface	2.4.0
57	KIP-475: New Metrics to Measure Number of Tasks on a Connector	2.4.0
58	KIP-474: To deprecate WindowStore#put(key, value)	2.4.0
59	KIP-471: Expose RocksDB Metrics in Kafka Streams	2.4.0 (partially implemented; completion blocked)
60	KIP-470: TopologyTestDriver test input and output usability improvements	2.4.0
61	KIP-467: Augment ProduceResponse error messaging for specific culprit records	2.4.0 (partially implemented) / 2.5.0
62	KIP-466: Add support for List<T> serialization and deserialization	2.6.0 (WIP)
63	KIP-465: Add Consolidated Connector Endpoint to Connect REST API	2.3.0
64	KIP-464: Defaults for AdminClient#createTopic	2.4.0
65	KIP-462: Use local thread id for KStreams	2.3.0
66	KIP-461: Improve Replica Fetcher behavior at handling partition failure	2.3.0
67	KIP-460: Admin Leader Election RPC	2.4.0
68	KIP-458: Connector Client Config Override Policy	2.3.0
69	KIP-455: Create an Administrative API for Replica Reassignment	2.4.0 (API/broker logic) 2.5.0 (tools changes)
70	KIP-454: Expansion of the ConnectClusterState interface	2.3.0
71	KIP-453: Add close() method to RocksDBConfigSetter	2.3.0
72	KIP-449: Add connector contexts to log messages in Connect workers	2.3.0
73	KIP-447: Producer scalability for exactly once semantics	2.5.0 (broker, consumer, producer changes implemented) / 2.6.0 (Kafka Streams changes WIP)
74	KIP-446: Add changelog topic configuration to KTable suppress	2.6.0
75	KIP-445: In-memory Session Store	2.3.0
76	KIP-444: Augment metrics for Kafka Streams	2.4.0 (partially implemented) / 2.5.0 (partially implemented) / 2.6.0 (partially implemented)
77	KIP-443: Return to default segment.ms and segment.index.bytes in Streams repartition topics	2.3.0
78	KIP-442: Return to default max poll interval in Streams	2.3.0
79	KIP-441: Smooth Scaling Out for Kafka Streams	2.6.0 (WIP)
80	KIP-440: Extend Connect Converter to support headers	2.4.0
81	KIP-436: Add a metric indicating start time	2.3.0
82	KIP-434: Add Replica Fetcher and Log Cleaner Count Metrics	2.4.0
83	KIP-430 - Return Authorized Operations in Describe Responses	2.3.0
84	KIP-429: Kafka Consumer Incremental Rebalance Protocol	2.4.0
85	KIP-428: Add in-memory window store	2.3.0
86	KIP-427: Add AtMinIsr topic partition category (new metric & TopicCommand option)	2.3.0
87	KIP-425: Add some Log4J Kafka Appender Properties for Producing to Secured Brokers	2.3.0
88	KIP-421: Support resolving externalized secrets in AbstractConfig	2.3.0
89	KIP-420: Add Single Value Fetch in Session Stores	2.2.0
90	KIP-417: Allow JmxTool to connect to a secured RMI port	2.3.0
91	KIP-415: Incremental Cooperative Rebalancing in Kafka Connect	2.3.0
92	KIP-414: Expose Embedded ClientIds in Kafka Streams	2.2.0
93	KIP-412: Extend Admin API to support dynamic application log levels	2.4.0
94	KIP-411: Make default Kafka Connect worker task client IDs distinct	2.3.0
95	KIP-402: Improve fairness in SocketServer processors	2.2.0 (partially implemented) / 2.3.0
96	KIP-401: TransformerSupplier/ProcessorSupplier StateStore connecting	2.6.0 (WIP)
97	KIP-399: Extend ProductionExceptionHandler to cover serialization exceptions	2.5.0
98	KIP-396: Add Commit/List Offsets Operations to AdminClient	2.5.0
99	KIP-394: Require member.id for initial join group request	2.2.0
100	KIP-393: Time windowed serde to properly deserialize changelog input topic	2.2.0
101	KIP-392: Allow consumers to fetch from closest replica	2.4.0
102	KIP-389: Introduce a configurable consumer group size limit	2.2.0
103	KIP-386: Standardize on Min/Avg/Max metrics' default value	2.2.0
104	KIP-382: MirrorMaker 2.0	2.4.0
105	KIP-379: Multiple Consumer Group Management	2.4.0
106	KIP-380: Detect outdated control requests and bounced brokers using broker generation	2.2.0
107	KIP-377: TopicCommand to use AdminClient	2.2.0
108	KIP-376: Implement AutoClosable on appropriate classes that want to be used in a try-with-resource statement	2.2.0
109	KIP-374: Add '--help' option to all available Kafka CLI commands	2.2.0
110	KIP-372: Naming Repartition Topics for Joins and Grouping	2.1.0
111	KIP-371: Add a configuration to build custom SSL principal name	2.2.0
112	KIP-369: Alternative Partitioner to Support "Always Round-Robin" Selection	2.4.0
113	KIP 368: Allow SASL Connections to Periodically Re-Authenticate	2.2.0
114	KIP-367 Introduce close(Duration) to Producer and AdminClient instead of close(long, TimeUnit)	2.2.0
115	KIP-366: Make FunctionConversions deprecated	2.1.0
116	KIP-365: Materialized, Serialized, Joined, Consumed and Produced with implicit Serde	2.1.0
117	K IP-361: Add Consumer Configuration to Disable Auto Topic Creation	2.3.0
118	KIP-360: Improve reliability of idempotent/transactional producer	2.4.0 (partially implemented) / 2.5.0
119	KIP-359: Verify leader epoch in produce requests	2.6.0 (WIP)
120	KIP-358: Migrate Streams API to Duration instead of long ms times	2.1.0
121	KIP-357: Add support to list ACLs per principal	2.1.0
122	KIP-356: Add withCachingDisabled() to StoreBuilder	2.1.0
123	KIP-354: Add a Maximum Log Compaction Lag	2.3.0
124	KIP-353: Improve Kafka Streams Timestamp Synchronization	2.1.0
125	KIP-352: Distinguish URPs caused by reassignment	2.5.0
126	KIP-351: Add --under-min-isr option to describe topics command	2.3.0
127	KIP-346: Improve LogCleaner behavior on error	2.1.0
128	KIP-345: Introduce static membership protocol to reduce consumer rebalances	2.4.0
129	KIP-342 Add support for custom SASL extensions in OAuthBearer authentication	2.1.0
130	KIP-341: Update Sticky Assignor's User Data Protocol	2.3.0
131	KIP-340: Allow kafka-reassign-partitions.sh and kafka-log-dirs.sh to take admin client property file	2.1.0
132	KIP-339: Create a new IncrementalAlterConfigs API	2.3.0
133	KIP-338 Support to exclude the internal topics in kafka-topics.sh command	2.1.0
134	KIP-336: Consolidate ExtendedSerializer/Serializer and ExtendedDeserializer/Deserializer	2.1.0
135	KIP-332: Update AclCommand to use AdminClient API	2.1.0
136	KIP-331 Add default implementation to close() and configure() for Serializer, Deserializer and Serde	2.3.0
137	KIP-330: Add retentionPeriod in SessionBytesStoreSupplier	2.1.0
138	KIP-328: Ability to suppress updates for KTables	2.1.0 (partially implemented; inactive)
139	KIP-324: Add method to get metrics() in AdminClient	2.1.0
140	KIP-322: Return new error code for DeleteTopics API when topic deletion disabled.	2.1.0
141	KIP-321: Update TopologyDescription to better represent Source and Sink Nodes	2.1.0
142	KIP-320: Allow fetchers to detect and handle log truncation	2.1.0 (partially implemented) / 2.2.0
143	KIP-319: Replace segments with segmentInterval in WindowBytesStoreSupplier	2.1.0
144	KIP-313: Add KStream.flatTransform and KStream.flatTransformValues	2.2.0 (partially implemented) / 2.3.0
145	KIP-312 Add Overloaded StreamsBuilder Build Method to Accept java.util.Properties	2.1.0
146	KIP-309: Add toUpperCase support to sasl.kerberos.principal.to.local rule	2.4.0
147	KIP-308: Support dynamic update of max.connections.per.ip/max.connections.per.ip.overrides	2.1.0
148	KIP-307: Allow to define custom processor names with KStreams DSL	2.3.0 (partially implemented) / 2.4.0
149	KIP-306: Configuration for Delaying Response to Failed Authentication	2.1.0
150	KIP-305: Add Connect primitive number converters	2.0.0
151	KIP-303: Add Dynamic Routing in Streams Sink	2.0.0
152	KIP-302 - Enable Kafka clients to use all DNS resolved IP addresses	2.1.0
153	KIP-300: Add Windowed KTable API in StreamsBuilder	3.0.0 (not implemented; inactive)
154	KIP-298: Error Handling in Connect	2.0.0
155	KIP-297: Externalizing Secrets for Connect Configurations	2.0.0
156	KIP-295 Add Streams Configuration Allowing for Optional Topology Optimization	2.0.0
157	KIP-294 - Enable TLS hostname verification by default	2.0.0
158	KIP-291: Separating controller connections and requests from the data plane	Accepted
159	KIP-292: Add transformValues() method to KTable	2.0.0
160	KIP-290: Support for Prefixed ACLs	2.0.0
161	KIP-289: Improve the default group id behavior in KafkaConsumer	2.2.0
162	KIP-285: Connect Rest Extension Plugin	2.0.0
163	KIP-284: Set default retention ms for Streams repartition topics to Long.MAX_VALUE	2.0.0
164	KIP-283: Efficient Memory Usage for Down-Conversion	2.0.0
165	KIP-282: Add the listener name to the authentication context	2.0.0
166	KIP-281: ConsumerPerformance: Increase Polling Loop Timeout and Make It Reachable by the End User	2.0.0
167	KIP-280: Enhanced log compaction	2.6.0 (WIP)
168	KIP-279: Fix log divergence between leader and follower after fast leader fail over	2.0.0
169	KIP-278 - Add version option to Kafka's commands	2.0.0
170	KIP-277 - Fine Grained ACL for CreateTopics API	2.0.0
171	KIP-276 - Add StreamsConfig prefix for different consumers	2.0.0
172	KIP-274: Kafka Streams Skipped Records Metrics	2.0.0
173	KIP-272: Add API version tag to broker's RequestsPerSec metric	2.0.0
174	KIP-270 - A Scala Wrapper Library for Kafka Streams	2.0.0
175	KIP-268: Simplify Kafka Streams Rebalance Metadata Upgrade	2.0.0
176	KIP-267: Add Processor Unit Test Support to Kafka Streams Test Utils	2.0.0
177	KIP-266: Fix consumer indefinite blocking behavior	2.0.0
178	KIP-265: Make Windowed Serde to public APIs	2.0.0
179	KIP-261: Add Single Value Fetch in Window Stores	2.0.0
180	KIP-258: Allow to Store Record Timestamps in RocksDB	2.3.0 (partially implemented; inactive)
181	KIP-257 - Configurable Quota Management	2.0.0
182	KIP-255: OAuth Authentication via SASL/OAUTHBEARER	2.0.0
183	KIP-251: Allow timestamp manipulation in Processor API	2.0.0
184	KIP-249: Add Delegation Token Operations to KafkaAdminClient	2.0.0
185	KIP-247: Add public test utils for Kafka Streams	1.1.0
186	KIP-245: Use Properties instead of StreamsConfig in KafkaStreams constructor	2.0.0
187	KIP-244: Add Record Header support to Kafka Streams Processor API	2.0.0
188	KIP-243: Make ProducerConfig and ConsumerConfig constructors public	1.1.0
189	KIP-239 Add queryableStoreName() to GlobalKTable	1.1.0
190	KIP-238: Expose Kafka cluster ID in Connect REST API	1.1.0
191	KIP-237: More Controller Health Metrics	2.0.0
192	KIP-235: Add DNS alias support for secured connection	2.1.0
193	KIP-233: Simplify StreamsBuilder#addGlobalStore	1.1.0
194	KIP-231: Improve the Required ACL of ListGroups API	2.1.0
195	KIP-229: DeleteGroups API	1.1.0
196	KIP-227 - Introduce Incremental FetchRequests to Increase Partition Scalability	1.1.0
197	KIP-226 - Dynamic Broker Configuration	1.1.0
198	KIP-225 - Use tags for consumer “records.lag” metrics	1.1.0
199	KIP-224: Add configuration parameter `retries` to Streams API	1.1.0
200	KIP-223 - Add per-topic min lead and per-partition lead metrics to KafkaConsumer	2.0.0
201	KIP-222 - Add Consumer Group operations to Admin API	2.0.0
202	KIP-221: Enhance DSL with Connecting Topic Creation and Repartition Hint	2.6.0
203	KIP-220: Add AdminClient into Kafka Streams' ClientSupplier	1.1.0
204	KIP-219 - Improve quota communication	2.0.0
205	KIP-218: Make KafkaFuture.Function java 8 lambda compatible	1.1.0
206	KIP-216: IQ should throw different exceptions for different errors	2.5.0
207	KIP-215: Add topic regex support for Connect sinks	1.1.0
208	KIP-214: Add zookeeper.max.in.flight.requests config to the broker	1.1.0
209	KIP-213 Support non-key joining in KTable	2.4.0
210	KIP-212: Enforce set of legal characters for connector names	1.1.0
211	KIP-211: Revise Expiration Semantics of Consumer Group Offsets	2.1.0
212	KIP-210 - Provide for custom error handling when Kafka Streams fails to produce	1.1.0
213	KIP-208: Add SSL support to Kafka Connect REST interface	1.1.0
214	KIP-207: Offsets returned by ListOffsetsResponse should be monotonically increasing even during a partition leader change	2.2.0
215	KIP-206: Add support for UUID serialization and deserialization	2.1.0
216	KIP-205: Add all() and range() API to ReadOnlyWindowStore	1.1.0
217	KIP-204 : Adding records deletion operation to the new Admin Client API	1.1.0
218	KIP-203: Add toLowerCase support to sasl.kerberos.principal.to.local rule	1.1.0
219	KIP-202: Move merge() from StreamsBuilder to KStream	1.0.0
220	KIP-198: Remove ZK dependency from Streams Reset Tool	1.0.0
221	KIP-197 Connect REST API should include the connector type when describing a connector	1.0.0
222	KIP-196: Add metrics to Kafka Connect framework	1.0.0
223	KIP-195: AdminClient.createPartitions	1.0.0
224	KIP-192 : Provide cleaner semantics when idempotence is enabled	1.0.0
225	KIP-191: KafkaConsumer.subscribe() overload that takes just Pattern	1.0.0
226	KIP-190: Handle client-ids consistently between clients and brokers	1.0.0
227	KIP-189: Improve principal builder interface and add support for SASL	1.0.0
228	KIP-188 - Add new metrics to support health checks	1.0.0
229	KIP-187 - Add cumulative count metric for all Kafka rate metrics	1.0.0
230	KIP-186: Increase offsets retention default to 7 days	2.0.0
231	KIP-183 - Change PreferredReplicaLeaderElectionCommand to use AdminClient	2.2.0
232	KIP-182: Reduce Streams DSL overloads and allow easier use of custom storage engines	1.0.0
233	KIP-180: Add a broker metric specifying the number of consumer group rebalances in progress	1.1.0
234	KIP-177: Consumer perf tool should count rebalance time	1.0.0
235	KIP-176: Remove deprecated new-consumer option for tools	2.0.0
236	KIP-175: Additional '--describe' views for ConsumerGroupCommand	1.1.0
237	KIP-174 - Deprecate and remove internal converter configs in WorkerConfig	2.0.0
238	KIP-173: Add prefix to StreamsConfig to enable setting default internal topic configs	1.0.0
239	KIP-171 - Extend Consumer Group Reset Offset for Stream Application	1.1.0
240	KIP-168: Add GlobalTopicCount and GlobalPartitionCount metric per cluster	1.0.0
241	KIP-167: Add interface for the state store restoration process	1.0.0
242	KIP-164 - Add UnderMinIsrPartitionCount and per-partition UnderMinIsr metrics	1.0.0
243	KIP-163: Lower the Minimum Required ACL Permission of OffsetFetch	1.0.0
244	KIP-162: Enable topic deletion by default	1.0.0
245	KIP-161: streams deserialization exception handlers	1.0.0
246	KIP-160: Augment KStream.print(), KStream.writeAsText() to allow users pass in extra parameters in the printed string	1.0.0
247	KIP-158: Kafka Connect should allow source connectors to set topic-specific settings for new topics	2.6.0 (WIP)
248	KIP-157 - Add consumer config options to streams reset tool	1.0.0
249	KIP-156 Add option "dry run" to Streams application reset tool	0.11.0.0
250	KIP-155 - Add range scan for windowed state stores	0.11.0.0
251	KIP-154 Add Kafka Connect configuration properties for creating internal topics	0.11.0.0
252	KIP-153: Include only client traffic in BytesOutPerSec metric	0.11.0.0
253	KIP-152 - Improve diagnostics for SASL authentication failures	1.0.0
254	KIP-151 Expose Connector type in REST API	0.11.0.0
255	KIP-150 - Kafka-Streams Cogroup	2.5.0
256	KIP-149: Enabling key access in ValueTransformer, ValueMapper, and ValueJoiner	1.1.0 (partially implemented; inactive)
257	KIP-146 - Classloading Isolation in Connect	0.11.0.0
258	KIP-145 - Expose Record Headers in Kafka Connect	1.1.0
259	KIP-144: Exponential backoff for broker reconnect attempts	0.11.0.0
260	KIP-143: Controller Health Metrics	0.11.0.0
261	KIP-140: Add administrative RPCs for adding, deleting, and listing ACLs	0.11.0.0
262	KIP-138: Change punctuate semantics	1.0.0
263	KIP-137: Enhance TopicCommand --describe to show topics marked for deletion	0.11.0.0
264	KIP-136: Add Listener name to SelectorMetrics tags	0.11.0.0
265	KIP-134: Delay initial consumer group rebalance	0.11.0.0
266	KIP-133: Describe and Alter Configs Admin APIs	0.11.0.0
267	KIP-131 - Add access to OffsetStorageReader from SourceConnector	2.6.0 (WIP)
268	KIP-130: Expose states of active tasks to KafkaStreams public API	1.0.0
268269	KIP-129: Streams Exactly-Once Semantics	0.11.0.0
269270	KIP-128: Add ByteArrayConverter for Kafka Connect	0.11.0.0
270271	KIP-126 - Allow KafkaProducer to split and resend oversized batches.	0.11.0.0
271272	KIP-124 - Request rate quotas	0.11.0.0
272273	KIP-123: Allow per stream/table timestamp extractor	0.11.0.0
273274	KIP-122: Add Reset Consumer Group Offsets tooling	0.11.0.0
274275	KIP-121: Add KStream peek method	0.11.0.0
275276	KIP-120: Cleanup Kafka Streams builder API	1.0.0
276277	KIP-119: Drop Support for Scala 2.10 in Kafka 0.11	0.11.0.0
277278	KIP-118: Drop Support for Java 7	2.0.0
278279	KIP-117: Add a public AdminClient API for Kafka admin operations	0.11.0.0
279280	KIP-115: Enforce offsets.topic.replication.factor upon __consumer_offsets auto topic creation	0.11.0.0
280281	KIP-114: KTable state stores and improved semantics	0.11.0.0
281282	KIP-113: Support replicas movement between log directories	1.1.0
282283	KIP-112: Handle disk failure for JBOD	1.0.0
283284	KIP-110: Add Codec for ZStandard Compression	2.1.0
284285	KIP-109: Old Consumer Deprecation	0.11.0.0
285286	KIP-108: Create Topic Policy	0.10.2.0
286287	KIP-107: Add deleteRecordsBefore() API in AdminClient	0.11.0.0
287288	KIP-106 - Change Default unclean.leader.election.enabled from True to False	0.11.0.0
288289	KIP-105: Addition of Record Level for Sensors	0.10.2.0
289290	KIP-104: Granular Sensors for Streams	0.10.2.0
290291	KIP-103: Separation of Internal and External traffic	0.10.2.0
291292	KIP-102 - Add close with timeout for consumers	0.10.2.0
292293	KIP-101 - Alter Replication Protocol to use Leader Epoch rather than High Watermark for Truncation	0.11.0.0
293294	KIP-100 - Relax Type constraints in Kafka Streams API	0.10.2.0
294295	KIP-99: Add Global Tables to Kafka Streams	0.10.2.0
295296	KIP-98 - Exactly Once Delivery and Transactional Messaging	0.11.0.0
296297	KIP-97: Improved Kafka Client RPC Compatibility Policy	0.10.2.0
297298	KIP-96 - Add per partition metrics for in-sync and assigned replica count	0.10.2.0
298299	KIP-94 Session Windows	0.10.2.0
299300	KIP-93: Improve invalid timestamp handling in Kafka Streams	0.10.2.0
300301	KIP-92 - Add per partition lag metrics to KafkaConsumer	0.10.2.0
301302	KIP-91 Provide Intuitive User Timeouts in The Producer	2.1.0
302303	KIP-90 - Remove zkClient dependency from Streams	0.10.2.0
303304	KIP-89: Allow sink connectors to decouple flush and offset commit	0.10.2.0
304305	KIP-88: OffsetFetch Protocol Update	0.10.2.0
305306	KIP-86: Configurable SASL callback handlers	2.0.0
306307	KIP-85: Dynamic JAAS configuration for Kafka clients	0.10.2.0
307308	KIP-84: Support SASL SCRAM mechanisms	0.10.2.0
308309	KIP-82 - Add Record Headers	0.11.0.0
309310	KIP-81: Bound Fetch memory usage in the consumer	2.6.0 (WIP)
310311	KIP-79 - ListOffsetRequest/ListOffsetResponse v1 and add timestamp search methods to the new consumer	0.10.1.0
311312	KIP-78: Cluster Id	0.10.1.0
312313	KIP-77: Improve Kafka Streams Join Semantics	0.10.2.0
313314	KIP-75 - Add per-connector Converters	0.10.1.0
314315	KIP-74: Add Fetch Response Size Limit in Bytes	0.10.1.0
315316	KIP-73: Replication Quotas	0.10.1.0
316317	KIP-72: Allow putting a bound on memory consumed by Incoming request	1.0.0
317318	KIP-71: Enable log compaction and deletion to co-exist	0.10.1.0
318319	KIP-70: Revise Partition Assignment Semantics on New Consumer's Subscription Change	0.10.1.0
319320	KIP-67: Queryable state for Kafka Streams	0.10.1.0
320321	KIP-66: Single Message Transforms for Kafka Connect	0.10.2.0 / 0.11.0.0
321322	KIP-65: Expose timestamps to Connect	0.10.1.0
322323	KIP-63: Unify store and downstream caching in streams	0.10.1.0
323324	KIP-62: Allow consumer to send heartbeats from a background thread	0.10.1.0
324325	KIP-60 - Make Java client classloading more flexible	0.10.1.0
325326	KIP-58 - Make Log Compaction Point Configurable	0.10.1.0
326327	KIP-57 - Interoperable LZ4 Framing	0.10.0.0
327328	KIP-56: Allow cross origin HTTP requests on all HTTP methods	0.10.0.0
328329	KIP-55: Secure Quotas for Authenticated Users	0.10.1.0
329330	KIP-54: Sticky Partition Assignment Strategy	0.11.0.0
330331	KIP-52: Connector Control APIs	0.10.0.0
331332	KIP-51 - List Connectors REST API	0.10.0.0
332333	KIP-48 Delegation token support for Kafka	1.1.0
333334	KIP-45 - Standardize all client sequence interaction on j.u.Collection.	0.10.0.0
334335	KIP-43: Kafka SASL enhancements	0.10.0.0
335336	KIP-42: Add Producer and Consumer Interceptors	0.10.0.0
336337	KIP-41: Consumer Max Records	0.10.0.0
337338	KIP-40: ListGroups and DescribeGroup	0.9.0.0
338339	KIP-38: ZooKeeper Authentication	0.9.0.0
339340	KIP-36 - Rack aware replica assignment	0.10.0.0
340341	KIP-35 - Retrieving protocol version	0.10.0.0
341342	KIP-33 - Add a time based log index	0.10.1.0
342343	KIP-32 - Add timestamps to Kafka message	0.10.0.0
343344	KIP-31 - Move to relative offsets in compressed message sets	0.10.0.0
344345	KIP-28 - Add a processor client	0.10.0.0
345346	KIP-26 - Add Kafka Connect framework for data import/export	0.9.0.0
346347	KIP-25 - System test improvements	0.9.0.0
347348	KIP-22 - Expose a Partitioner interface in the new producer	0.9.0.0
348349	KIP-21 - Dynamic Configuration	0.9.0.0 (WIP)
349350	KIP-20 Enable log preallocate to improve consume performance under windows and some old Linux file system	0.9.0.0
350351	KIP-19 - Add a request timeout to NetworkClient	0.9.0.0
351352	KIP-16 - Automated Replica Lag Tuning	0.9.0.0
352353	KIP-15 - Add a close method with a timeout in the producer	0.9.0.0
353354	KIP-13 - Quota Design	0.9.0.0
354355	KIP-12 - Kafka Sasl/Kerberos and SSL implementation	0.9.0.0
355356	KIP-11 - Kafka Authorizer design	0.9.0.0
356357	KIP-8 - Add a flush method to the producer API	0.9.0.0
357358	KIP-4 - Metadata Protocol Changes	0.10.0.0
358359	KIP-4 - Command line and centralized administrative operations	0.9.0.0, 0.10.0.0, 0.10.1.0
359360	KIP-3 - Mirror Maker Enhancement	0.9.0.0
360361	KIP-2 - Refactor brokers to allow listening on multiple ports and IPs	0.9.0.0
361362	KIP-1 - Remove support of request.required.acks	0.9.0.0

...

KIP	Comment
KIP-59: Proposal for a kafka broker command	Sent emails to Dev discussion group. Work tracked under KAFKA-3663.
KIP-125: ZookeeperConsumerConnector to KafkaConsumer Migration and Rollback KIP-131 - Add access to OffsetStorageReader from SourceConnector
KIP-135 : Send of null key to a compacted topic should throw non-retriable error back to user
KIP 141 - ProducerRecord & SourceRecord: Add timestamp constructors
KIP-142: Add ListTopicsRequest to efficiently list all the topics in a cluster
KIP-148: Add a connect timeout for client
KIP-166 - Add a tool to make amounts of replicas and leaders on brokers balanced
KIP-169 - Lag-Aware Partition Assignment Strategy
KIP-178: Size-based log directory selection strategy
KIP-185: Make exactly once in order delivery the default producer setting
KIP-193: Add SchemaBuilder.from(Schema)
KIP-199: Add Kafka Connect offset tool
KIP-201: Rationalising Policy interfaces
KIP-209: C onnection String Support
KIP-217: Expose a timeout to allow an expired ZK session to be re-created
KIP-228 Negative record timestamp support	Voting in progress
KIP-234: add support for getting topic defaults from AdminClient
KIP-236: Interruptible Partition Reassignment	Discussion
KIP-240: AdminClient.listReassignments() AdminClient.describeReassignments()
KIP-242: Mask password in Kafka Connect Rest API response
KIP-250 Add Support for Quorum-based Producer Acknowledgment
KIP-252 - Extend ACLs to allow filtering based on ip ranges and subnets
KIP-253: Support in-order message delivery with partition expansion	Discussion
KIP-254: JsonConverter Exception Handeling
KIP-264: Add a consumer metric to record raw fetch size	Voting in progress
KIP-271: Add NetworkClient redirector	Discussion
KIP-273: Kafka to support using ETCD beside Zookeeper	Discussion
KIP-275 - Indicate "isClosing" in the SinkTaskContext	Voting in progress
KIP-293 Add new metrics for consumer/replication fetch requests	Voting in progress
KIP-296: Add connector level configurability for producer/consumer client configs	Discussion
KIP-301: Schema Inferencing for JsonConverter	Discussion
KIP-304: Connect runtime mode improvements for container platforms	Discussion
KIP-315: Stream Join Sticky Assignor	Discussion
KIP-316: Command-line overrides for ConnectDistributed worker properties	Discussion
KIP-317: Add end-to-end data encryption functionality to Apache Kafka	Discussion
KIP-325: Extend Consumer Group Command to Show Beginning Offsets	Voting in Progress345
KIP-333: Add faster mode of rebalancing	Discussion
KIP-334 - Include partitions in exceptions raised during consumer record deserialization/validation
KIP-347: Enable batching in FindCoordinatorRequest	Discussion
KIP-348 Eliminate null from SourceTask#poll()
KIP-350: Allow kafka-topics.sh to take brokerid as parameter to show partitions associated with it
KIP-356: Add KafkaConsumer fetch-error-rate and fetch-error-total metrics	Discussion
KIP-363: Allow performance tools to print final results to output file	Discussion
KIP-370: Remove Orphan Partitions	Discussion
KIP-373: Allow users to create delegation tokens for other users	Accepted
KIP-375: Kafka Clients - make Metadata#TOPIC_EXPIRY_MS configurable	Discussion
KIP-381: Connect: Tell about records that had their offsets flushed in callback	Voting in progress (restarted 18th January 2019, due to no votes in first attempt)
KIP-384: Add config for incompatible changes to persistent metadata	Discussion
KIP-385: Avoid throwing away prefetched data	Discussion
KIP-387: Fair Message Consumption Across Partitions in KafkaConsumer	Discussion
KIP-388: Add observer interface to record request and response	Discussion
KIP-390: Allow fine-grained configuration for compression	Discussion, JIRA exists with pull-request
KIP-395: Encypt-then-MAC Delegation token metadata
KIP-397: Add methods to override fetch offsets based on timestamp	Discussion
KIP-400: Improve exit status in case of errors in ConsoleProducer	Discussion
KIP-403: Increase ProducerPerformance precision by using nanoTime	Draft
KIP-405: Kafka Tiered Storage	Discussion
KIP-407: Kafka Connect support override worker kafka api configuration with connector configuration that post by rest api
KIP-409: Allow creating under-replicated topics and partitions
KIP-410: Add metric for request handler thread pool utilization by request type	Discussion
KIP-416: Notify SourceTask of ACK'd offsets, metadata	Discussion
KIP-418: A method-chaining way to branch KStream	Discussion
KIP-419: Safely notify Kafka Connect SourceTask is stopped	Voting in progress, JIRA exists with pull request
KIP-423: Add JoinReason to Consumer Join Group Protocol	Discussion
KIP-424: Allow suppression of intermediate events based on wall clock time	Discussion
KIP-426: Persist Broker Id to Zookeeper	Discussion
KIP-431: Support of printing additional ConsumerRecord fields in DefaultMessageFormatter	Voting in progress, JIRA exists with pull-request
KIP-435: Internal Partition Reassignment Batching	Discussion
KIP-437: Custom replacement for MaskField SMT	Voting in progress, JIRA exists with pull-request
KIP-438: Expose task, connector IDs in Connect API	Discussion
KIP-439: Cleanup built-in Store interfaces	Discussion
KIP-448: Add State Stores Unit Test Support to Kafka Streams Test Utils	Discussion
KIP-452: Tool to view cluster status	Discussion, JIRA exists
KIP-468: Avoid decompression of record when validate record at server in the scene of inPlaceAssignment .	Under discussion
KIP-473: Enable KafkaLog4JAppender to use SASL Authentication Callback Handlers	Under Discussion
KIP-477: Add PATCH method for connector config in Connect REST API	Under Discussion
KIP-487: Automatic Topic Creation on Producer	Under Discussion
KIP-489: Kafka Consumer Record Latency Metric	Under Discussion
KIP-490: New metric to count offsets expired without being consumed by a consumer group	Under discussion
KIP-491: Preferred Leader Deprioritized List (Temporary Blacklist)	Under discussion
KIP-494: Connect REST Endpoint to get Transformations (SMTs)
KIP-498: Add client-side configuration for maximum response size to protect against OOM	Sent emails to Dev discussion group. Work tracked under KAFKA-4090.
KIP-499 - Unify connection name flag for command line tool	Under discussion
KIP-502: Connect SinkTask.put(...) to specify ArrayList<SinkRecord> in Signature
KIP-505: Add new public method to only update assignment metadata in consumer	Under discussion
KIP-506: Allow setting SCRAM password via Admin interface	Under discussion
KIP-509: Rebalance and restart Producers	Under discussion
KIP-510: Metrics library upgrade	Under discussion
KIP-512: Adding headers to RecordMetaData	Sent mail to dev discussion group
KIP-513: Distinguish between Key and Value serdes in scala wrapper library for kafka streams	Sent mail to dev discussion group
KIP-516: Topic Identifiers & Topic Deletion State Improvements	Under discussion
KIP-536: Propagate broker start time to Admin API	Under discussion
KIP-539: Add mechanism to flush records out in low volume suppression buffers	Under discussion.
KIP-540: Implement per key stream time tracking	Draft (In Progress)
KIP-542: Partition Reassignment Throttling	Draft
KIP-545: support automated consumer offset sync across clusters in MM 2.0	Voting in progress
KIP-547: Extend ConsumerInterceptor to allow modification of Consumer Commits	Under Discussion
KIP-548 Add Option to enforce rack-aware custom partition reassignment execution	Under Discussion
KIP-549: Surface Consumer's Metadata in KafkaAdminClient#describeConsumerGroups	Under Discussion
KIP-550: Mechanism to Delete Stray Partitions on Broker	Draft
KIP-552: Suppress "unused config" warning	Under Discussion
KIP-560: Auto infer external topic partitions in stream reset tool	Under Discussion
KIP-561: Regex Support for ConsumerGroupCommand	Under Discussion
KIP-563: Add 'tail -n' feature for ConsoleConsumer	Under Discussion
KIP-564: Add new cached authorizer:change the dim of cache	Under Discussion
KIP-565: Using AclCommand,avoid call the global method loadcache in SimpleAclAuthorizer	Under Discussion
KIP-566: Add rebalance callbacks to ConsumerInterceptor	Under Discussion
KIP-567: Kafka Cluster Audit	Under Discussion
KIP-571: Add option to force remove members in StreamsResetter	Voting
KIP-572: Improve timeouts and retries in Kafka Streams	Under Discussion
KIP-573: Enable TLSv1.3 by default	Under Discussion
KIP-575: build a Kafka-Exporter by Java	Under Discussion
KIP-576: Support dynamic update of more broker configs related to replication	Under Discussion
KIP-577: Allow HTTP Response Headers Configured for Kafka Connect	Voting
KIP-578: Add configuration to limit number of partitions	Under Discussion
KIP-579: new exception on min.insync.replicas > replication.factor	Voting in progress
KIP-581: Value of optional null field which has default value	Under Discussion
KIP-582: Add a "continue" option for Kafka Connect error handling	Under Discussion
KIP-583: add tag "partition" to BrokerTopicMetrics so as to observe the partition metrics on the same broker	Under Discussion
KIP-585: Conditional SMT	Under Discussion
KIP-586: Deprecate commit records without record metadata	Under Discussion
KIP-587: Suppress detailed responses for handled exceptions in security-sensitive environments	Under Discussion
KIP-590: Redirect Zookeeper Mutation Protocols to The Controller	Under Discussion
KIP-591: Add Kafka Streams config to set default store type	Under Discussion
KIP-592: Replicate mirrormaker topics from earliest	Under Discussion
KIP-593: Enable --if-exists and --if-not-exists for AdminClient in TopicCommand	Under Discussion
KIP-594: Expose output topic names from TopologyTestDriver	Under Discussion
KIP-595: A Raft Protocol for the Metadata Quorum	Under Discussion
KIP-597: MirrorMaker2 internal topics Formatters	Under Discussion
KIP-598: Augment TopologyDescription with store and source / sink serde information	Under Discussion
KIP-601: Configurable socket connection timeout	Draft
KIP-602: Change default value for client.dns.lookup	Under Discussion

...

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