Version 1.24.0 (2019-10-09)

New Features:

• Add sticky partition assignor (1416).
• Switch from cgo zstd package to pure Go implementation (1477).

Improvements:

• Allow creating ClusterAdmin from client (1415).
• Set KafkaVersion in ListAcls method (1452).
• Set request version in CreateACL ClusterAdmin method (1458).
• Set request version in DeleteACL ClusterAdmin method (1461).
• Handle missed error codes on TopicMetaDataRequest and GroupCoordinatorRequest (1464).
• Remove direct usage of gofork (1465).
• Add support for Go 1.13 (1478).
• Improve behavior of NewMockListAclsResponse (1481).

Bug Fixes:

• Fix race condition in consumergroup example (1434).
• Fix brokerProducer goroutine leak (1442).
• Use released version of lz4 library (1469).
• Set correct version in MockDeleteTopicsResponse (1484).
• Fix CLI help message typo (1494).

Known Issues:

• Please don't use Zstd, as it doesn't work right now. See #1252.

Version 1.23.1 (2019-07-22)

Bug Fixes:

• Fix fetch delete bug record (1425).
• Handle SASL/OAUTHBEARER token rejection (1428).

Version 1.23.0 (2019-07-02)

New Features:

• Add support for Kafka 2.3.0 (1418).
• Add support for ListConsumerGroupOffsets v2 (1374).
• Add support for DeleteConsumerGroup (1417).
• Add support for SASLVersion configuration (1410).
• Add kerberos support (1366).

Improvements:

• Improve sasl_scram_client example (1406).
• Fix shutdown and race-condition in consumer-group example (1404).
• Add support for error codes 77—81 (1397).
• Pool internal objects allocated per message (1385).
• Reduce packet decoder allocations (1373).
• Support timeout when fetching metadata (1359).

Bug Fixes:

• Fix fetch size integer overflow (1376).
• Handle and log throttled FetchResponses (1383).
• Refactor misspelled word Resouce to Resource (1368).

Version 1.22.1 (2019-04-29)

Improvements:

• Use zstd 1.3.8 (1350).
• Add support for SaslHandshakeRequest v1 (1354).

Bug Fixes:

• Fix V5 MetadataRequest nullable topics array (1353).
• Use a different SCRAM client for each broker connection (1349).
• Fix AllowAutoTopicCreation for MetadataRequest greater than v3 (1344).

Version 1.22.0 (2019-04-09)

New Features:

• Add Offline Replicas Operation to Client (1318).
• Allow using proxy when connecting to broker (1326).
• Implement ReadCommitted (1307).
• Add support for Kafka 2.2.0 (1331).
• Add SASL SCRAM-SHA-512 and SCRAM-SHA-256 mechanismes (1331).

Improvements:

• Unregister all broker metrics on broker stop (1232).
• Add SCRAM authentication example (1303).
• Add consumergroup examples (1304).
• Expose consumer batch size metric (1296).
• Add TLS options to console producer and consumer (1300).
• Reduce client close bookkeeping (1297).
• Satisfy error interface in create responses (1154).
• Please lint gods (1346).

Bug Fixes:

• Fix multi consumer group instance crash (1338).
• Update lz4 to latest version (1347).
• Retry ErrNotCoordinatorForConsumer in new consumergroup session (1231).
• Fix cleanup error handler (1332).
• Fix rate condition in PartitionConsumer (1156).

Version 1.21.0 (2019-02-24)

New Features:

• Add CreateAclRequest, DescribeAclRequest, DeleteAclRequest (#1236).
• Add DescribeTopic, DescribeConsumerGroup, ListConsumerGroups, ListConsumerGroupOffsets admin requests (#1178).
• Implement SASL/OAUTHBEARER (#1240).

Improvements:

• Add Go mod support (#1282).
• Add error codes 73—76 (#1239).
• Add retry backoff function (#1160).
• Maintain metadata in the producer even when retries are disabled (#1189).
• Include ReplicaAssignment in ListTopics (#1274).
• Add producer performance tool (#1222).
• Add support LogAppend timestamps (#1258).

Bug Fixes:

• Fix potential deadlock when a heartbeat request fails (#1286).
• Fix consuming compacted topic (#1227).
• Set correct Kafka version for DescribeConfigsRequest v1 (#1277).
• Update kafka test version (#1273).

Version 1.20.1 (2019-01-10)

New Features:

• Add optional replica id in offset request (1100).

Improvements:

• Implement DescribeConfigs Request + Response v1 & v2 (1230).
• Reuse compression objects (1185).
• Switch from png to svg for GoDoc link in README (1243).
• Fix typo in deprecation notice for FetchResponseBlock.Records (1242).
• Fix typos in consumer metadata response file (1244).

Bug Fixes:

• Revert to individual msg retries for non-idempotent (1203).
• Respect MaxMessageBytes limit for uncompressed messages (1141).

Version 1.20.0 (2018-12-10)

New Features:

• Add support for zstd compression (#1170).
• Add support for Idempotent Producer (#1152).
• Add support support for Kafka 2.1.0 (#1229).
• Add support support for OffsetCommit request/response pairs versions v1 to v5 (#1201).
• Add support support for OffsetFetch request/response pair up to version v5 (#1198).

Improvements:

• Export broker's Rack setting (#1173).
• Always use latest patch version of Go on CI (#1202).
• Add error codes 61 to 72 (#1195).

Bug Fixes:

• Fix build without cgo (#1182).
• Fix go vet suggestion in consumer group file (#1209).
• Fix typos in code and comments (#1228).

Version 1.19.0 (2018-09-27)

New Features:

• Implement a higher-level consumer group (#1099).

Improvements:

• Add support for Go 1.11 (#1176).

Bug Fixes:

• Fix encoding of MetadataResponse with version 2 and higher (#1174).
• Fix race condition in mock async producer (#1174).

Version 1.18.0 (2018-09-07)

New Features:

• Make Partitioner.RequiresConsistency vary per-message (#1112).
• Add customizable partitioner (#1118).
• Add ClusterAdmin support for CreateTopic, DeleteTopic, CreatePartitions, DeleteRecords, DescribeConfig, AlterConfig, CreateACL, ListAcls, DeleteACL (#1055).

Improvements:

• Add support for Kafka 2.0.0 (#1149).
• Allow setting LocalAddr when dialing an address to support multi-homed hosts (#1123).
• Simpler offset management (#1127).

Bug Fixes:

• Fix mutation of ProducerMessage.MetaData when producing to Kafka (#1110).
• Fix consumer block when response did not contain all the expected topic/partition blocks (#1086).
• Fix consumer block when response contains only constrol messages (#1115).
• Add timeout config for ClusterAdmin requests (#1142).
• Add version check when producing message with headers (#1117).
• Fix MetadataRequest for empty list of topics (#1132).
• Fix producer topic metadata on-demand fetch when topic error happens in metadata response (#1125).