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1.2.1 (June 1, 2016)

Bugfixes

  • Fix regression in MessageSet decoding wrt PartialMessages (#716)
  • Catch response decode errors and log details (#715)
  • Fix Legacy support url (#712 - JonasGroeger)
  • Update sphinx docs re 0.10 broker support

1.2.0 (May 24, 2016)

This release officially adds support for Kafka 0.10

  • Add protocol support for ApiVersionRequest (dpkp PR 678)
  • KAFKA-3025: Message v1 -- add timetamp and relative offsets (dpkp PR 693)
  • Use Fetch/Produce API v2 for brokers >= 0.10 (uses message format v1) (dpkp PR 694)
  • Use standard LZ4 framing for v1 messages / kafka 0.10 (dpkp PR 695)

Consumers

  • Update SimpleConsumer / legacy protocol to handle compressed messages (paulcavallaro PR 684)

Producers

  • KAFKA-3388: Fix expiration of batches sitting in the accumulator (dpkp PR 699)
  • KAFKA-3197: when max.in.flight.request.per.connection = 1, attempt to guarantee ordering (dpkp PR 698)
  • Dont use soon-to-be-reserved keyword await as function name (FutureProduceResult) (dpkp PR 697)

Clients

  • Fix socket leaks in KafkaClient (dpkp PR 696)

Documentation

Internals

  • Support SSL CRL [requires python 2.7.9+ / 3.4+] (vincentbernat PR 683)
  • Use original hostname for SSL checks (vincentbernat PR 682)
  • Always pass encoded message bytes to MessageSet.encode()
  • Raise ValueError on protocol encode/decode errors
  • Supplement socket.gaierror exception in BrokerConnection.connect() (erikbeebe PR 687)
  • BrokerConnection check_version: expect 0.9 to fail with CorrelationIdError
  • Fix small bug in Sensor (zackdever PR 679)

1.1.1 (Apr 26, 2016)

quick bugfixes

  • fix throttle_time_ms sensor handling (zackdever pr 667)
  • improve handling of disconnected sockets (easypost pr 666 / dpkp)
  • disable standard metadata refresh triggers during bootstrap (dpkp)
  • more predictable future callback/errback exceptions (zackdever pr 670)
  • avoid some exceptions in coordinator.del (dpkp pr 668)

1.1.0 (Apr 25, 2016)

Consumers

  • Avoid resending FetchRequests that are pending on internal queue
  • Log debug messages when skipping fetched messages due to offset checks
  • KAFKA-3013: Include topic-partition in exception for expired batches
  • KAFKA-3318: clean up consumer logging and error messages
  • Improve unknown coordinator error handling
  • Improve auto-commit error handling when group_id is None
  • Add paused() API (zackdever PR 602)
  • Add default_offset_commit_callback to KafkaConsumer DEFAULT_CONFIGS

Producers

Clients

  • Support SSL connections
  • Use selectors module for non-blocking IO
  • Refactor KafkaClient connection management
  • Fix AttributeError in del
  • SimpleClient: catch errors thrown by _get_leader_for_partition (zackdever PR 606)

Documentation

  • Fix serializer/deserializer examples in README
  • Update max.block.ms docstring
  • Remove errant next(consumer) from consumer documentation
  • Add producer.flush() to usage docs

Internals

  • Add initial metrics implementation (zackdever PR 637)
  • KAFKA-2136: support Fetch and Produce v1 (throttle_time_ms)
  • Use version-indexed lists for request/response protocol structs (dpkp PR 630)
  • Split kafka.common into kafka.structs and kafka.errors
  • Handle partial socket send() (dpkp PR 611)
  • Fix windows support (dpkp PR 603)
  • IPv6 support (TimEvens PR 615; Roguelazer PR 642)

1.0.2 (Mar 14, 2016)

Consumers

  • Improve KafkaConsumer Heartbeat handling (dpkp PR 583)
  • Fix KafkaConsumer.position bug (stefanth PR 578)
  • Raise TypeError when partition is not a TopicPartition (dpkp PR 587)
  • KafkaConsumer.poll should sleep to prevent tight-loops (dpkp PR 597)

Producers

  • Fix producer threading bug that can crash sender (dpkp PR 590)
  • Fix bug in producer buffer pool reallocation (dpkp PR 585)
  • Remove spurious warnings when closing sync SimpleProducer (twm PR 567)
  • Fix FutureProduceResult.await() on python2.6 (dpkp)
  • Add optional timeout parameter to KafkaProducer.flush() (dpkp)
  • KafkaProducer Optimizations (zackdever PR 598)

Clients

  • Improve error handling in SimpleClient.load_metadata_for_topics (dpkp)
  • Improve handling of KafkaClient.least_loaded_node failure (dpkp PR 588)

Documentation

  • Fix KafkaError import error in docs (shichao-an PR 564)
  • Fix serializer / deserializer examples (scribu PR 573)

Internals

  • Update to Kafka 0.9.0.1 for integration testing
  • Fix ifr.future.failure in conn.py (mortenlj PR 566)
  • Improve Zookeeper / Kafka Fixture management (dpkp)

1.0.1 (Feb 19, 2016)

Consumers

  • Add RangePartitionAssignor (and use as default); add assignor tests (dpkp PR 550)
  • Make sure all consumers are in same generation before stopping group test
  • Verify node ready before sending offset fetch request from coordinator
  • Improve warning when offset fetch request returns unknown topic / partition

Producers

  • Warn if pending batches failed during flush
  • Fix concurrency bug in RecordAccumulator.ready()
  • Fix bug in SimpleBufferPool memory condition waiting / timeout
  • Support batch_size = 0 in producer buffers (dpkp PR 558)
  • Catch duplicate batch.done() calls [e.g., maybe_expire then a response errback]

Clients

Documentation

  • Improve kafka.cluster docstrings
  • Migrate load_example.py to KafkaProducer / KafkaConsumer

Internals

  • Dont override system rcvbuf or sndbuf unless configured explicitly (dpkp PR 557)
  • Some attributes may not exist in del if we failed assertions
  • Break up some circular references and close client wake pipes on del (aisch PR 554)

1.0.0 (Feb 15, 2016)

This release includes significant code changes. Users of older kafka-python versions are encouraged to test upgrades before deploying to production as some interfaces and configuration options have changed.

Users of SimpleConsumer / SimpleProducer / SimpleClient (formerly KafkaClient) from prior releases should migrate to KafkaConsumer / KafkaProducer. Low-level APIs (Simple*) are no longer being actively maintained and will be removed in a future release.

For comprehensive API documentation, please see python help() / docstrings, kafka-python.readthedocs.org, or run tox -e docs from source to build documentation locally.

Consumers

  • KafkaConsumer re-written to emulate the new 0.9 kafka consumer (java client) and support coordinated consumer groups (feature requires >= 0.9.0.0 brokers)

    • Methods no longer available:

      • configure [initialize a new consumer instead]
      • set_topic_partitions [use subscribe() or assign()]
      • fetch_messages [use poll() or iterator interface]
      • get_partition_offsets
      • offsets [use committed(partition)]
      • task_done [handled internally by auto-commit; or commit offsets manually]

    • Configuration changes (consistent with updated java client):

      • lots of new configuration parameters -- see docs for details
      • auto_offset_reset: previously values were 'smallest' or 'largest', now values are 'earliest' or 'latest'
      • fetch_wait_max_ms is now fetch_max_wait_ms
      • max_partition_fetch_bytes is now max_partition_fetch_bytes
      • deserializer_class is now value_deserializer and key_deserializer
      • auto_commit_enable is now enable_auto_commit
      • auto_commit_interval_messages was removed
      • socket_timeout_ms was removed
      • refresh_leader_backoff_ms was removed

  • SimpleConsumer and MultiProcessConsumer are now deprecated and will be removed in a future release. Users are encouraged to migrate to KafkaConsumer.

Producers

  • new producer class: KafkaProducer. Exposes the same interface as official java client. Async by default; returned future.get() can be called for synchronous blocking
  • SimpleProducer is now deprecated and will be removed in a future release. Users are encouraged to migrate to KafkaProducer.

Clients

  • synchronous KafkaClient renamed to SimpleClient. For backwards compatibility, you will get a SimpleClient via from kafka import KafkaClient. This will change in a future release.
  • All client calls use non-blocking IO under the hood.
  • Add probe method check_version() to infer broker versions.

Documentation

  • Updated README and sphinx documentation to address new classes.
  • Docstring improvements to make python help() easier to use.

Internals

  • Old protocol stack is deprecated. It has been moved to kafka.protocol.legacy and may be removed in a future release.
  • Protocol layer re-written using Type classes, Schemas and Structs (modeled on the java client).
  • Add support for LZ4 compression (including broken framing header checksum).

0.9.5 (Dec 6, 2015)

Consumers

  • Initial support for consumer coordinator: offsets only (toddpalino PR 420)
  • Allow blocking until some messages are received in SimpleConsumer (saaros PR 457)
  • Support subclass config changes in KafkaConsumer (zackdever PR 446)
  • Support retry semantics in MultiProcessConsumer (barricadeio PR 456)
  • Support partition_info in MultiProcessConsumer (scrapinghub PR 418)
  • Enable seek() to an absolute offset in SimpleConsumer (haosdent PR 412)
  • Add KafkaConsumer.close() (ucarion PR 426)

Producers

  • Catch client.reinit() exceptions in async producer (dpkp)
  • Producer.stop() now blocks until async thread completes (dpkp PR 485)
  • Catch errors during load_metadata_for_topics in async producer (bschopman PR 467)
  • Add compression-level support for codecs that support it (trbs PR 454)
  • Fix translation of Java murmur2 code, fix byte encoding for Python 3 (chrischamberlin PR 439)
  • Only call stop() on not-stopped producer objects (docker-hub PR 435)
  • Allow null payload for deletion feature (scrapinghub PR 409)

Clients

  • Use non-blocking io for broker aware requests (ecanzonieri PR 473)
  • Use debug logging level for metadata request (ecanzonieri PR 415)
  • Catch KafkaUnavailableError in _send_broker_aware_request (mutability PR 436)
  • Lower logging level on replica not available and commit (ecanzonieri PR 415)

Documentation

  • Update docs and links wrt maintainer change (mumrah -> dpkp)

Internals

  • Add py35 to tox testing
  • Update travis config to use container infrastructure
  • Add 0.8.2.2 and 0.9.0.0 resources for integration tests; update default official releases
  • new pylint disables for pylint 1.5.1 (zackdever PR 481)
  • Fix python3 / python2 comments re queue/Queue (dpkp)
  • Add Murmur2Partitioner to kafka all imports (dpkp Issue 471)
  • Include LICENSE in PyPI sdist (koobs PR 441)

0.9.4 (June 11, 2015)

Consumers

  • Refactor SimpleConsumer internal fetch handling (dpkp PR 399)
  • Handle exceptions in SimpleConsumer commit() and reset_partition_offset() (dpkp PR 404)
  • Improve FailedPayloadsError handling in KafkaConsumer (dpkp PR 398)
  • KafkaConsumer: avoid raising KeyError in task_done (dpkp PR 389)
  • MultiProcessConsumer -- support configured partitions list (dpkp PR 380)
  • Fix SimpleConsumer leadership change handling (dpkp PR 393)
  • Fix SimpleConsumer connection error handling (reAsOn2010 PR 392)
  • Improve Consumer handling of 'falsy' partition values (wting PR 342)
  • Fix _offsets call error in KafkaConsumer (hellais PR 376)
  • Fix str/bytes bug in KafkaConsumer (dpkp PR 365)
  • Register atexit handlers for consumer and producer thread/multiprocess cleanup (dpkp PR 360)
  • Always fetch commit offsets in base consumer unless group is None (dpkp PR 356)
  • Stop consumer threads on delete (dpkp PR 357)
  • Deprecate metadata_broker_list in favor of bootstrap_servers in KafkaConsumer (dpkp PR 340)
  • Support pass-through parameters in multiprocess consumer (scrapinghub PR 336)
  • Enable offset commit on SimpleConsumer.seek (ecanzonieri PR 350)
  • Improve multiprocess consumer partition distribution (scrapinghub PR 335)
  • Ignore messages with offset less than requested (wkiser PR 328)
  • Handle OffsetOutOfRange in SimpleConsumer (ecanzonieri PR 296)

Producers

  • Add Murmur2Partitioner (dpkp PR 378)
  • Log error types in SimpleProducer and SimpleConsumer (dpkp PR 405)
  • SimpleProducer support configuration of fail_on_error (dpkp PR 396)
  • Deprecate KeyedProducer.send() (dpkp PR 379)
  • Further improvements to async producer code (dpkp PR 388)
  • Add more configuration parameters for async producer (dpkp)
  • Deprecate SimpleProducer batch_send=True in favor of async (dpkp)
  • Improve async producer error handling and retry logic (vshlapakov PR 331)
  • Support message keys in async producer (vshlapakov PR 329)
  • Use threading instead of multiprocessing for Async Producer (vshlapakov PR 330)
  • Stop threads on del (chmduquesne PR 324)
  • Fix leadership failover handling in KeyedProducer (dpkp PR 314)

KafkaClient

  • Add .topics property for list of known topics (dpkp)
  • Fix request / response order guarantee bug in KafkaClient (dpkp PR 403)
  • Improve KafkaClient handling of connection failures in _get_conn (dpkp)
  • Client clears local metadata cache before updating from server (dpkp PR 367)
  • KafkaClient should return a response or error for each request - enable better retry handling (dpkp PR 366)
  • Improve str/bytes conversion in KafkaClient and KafkaConsumer (dpkp PR 332)
  • Always return sorted partition ids in client.get_partition_ids_for_topic() (dpkp PR 315)

Documentation

  • Cleanup Usage Documentation
  • Improve KafkaConsumer documentation (dpkp PR 341)
  • Update consumer documentation (sontek PR 317)
  • Add doc configuration for tox (sontek PR 316)
  • Switch to .rst doc format (sontek PR 321)
  • Fixup google groups link in README (sontek PR 320)
  • Automate documentation at kafka-python.readthedocs.org

Internals

  • Switch integration testing from 0.8.2.0 to 0.8.2.1 (dpkp PR 402)
  • Fix most flaky tests, improve debug logging, improve fixture handling (dpkp)
  • General style cleanups (dpkp PR 394)
  • Raise error on duplicate topic-partition payloads in protocol grouping (dpkp)
  • Use module-level loggers instead of simply 'kafka' (dpkp)
  • Remove pkg_resources check for version at runtime (dpkp PR 387)
  • Make external API consistently support python3 strings for topic (kecaps PR 361)
  • Fix correlation id overflow (dpkp PR 355)
  • Cleanup kafka/common structs (dpkp PR 338)
  • Use context managers in gzip_encode / gzip_decode (dpkp PR 337)
  • Save failed request as FailedPayloadsError attribute (jobevers PR 302)
  • Remove unused kafka.queue (mumrah)

0.9.3 (Feb 3, 2015)

  • Add coveralls.io support (sontek PR 307)
  • Fix python2.6 threading.Event bug in ReentrantTimer (dpkp PR 312)
  • Add kafka 0.8.2.0 to travis integration tests (dpkp PR 310)
  • Auto-convert topics to utf-8 bytes in Producer (sontek PR 306)
  • Fix reference cycle between SimpleConsumer and ReentrantTimer (zhaopengzp PR 309)
  • Add Sphinx API docs (wedaly PR 282)
  • Handle additional error cases exposed by 0.8.2.0 kafka server (dpkp PR 295)
  • Refactor error class management (alexcb PR 289)
  • Expose KafkaConsumer in all for easy imports (Dinoshauer PR 286)
  • SimpleProducer starts on random partition by default (alexcb PR 288)
  • Add keys to compressed messages (meandthewallaby PR 281)
  • Add new high-level KafkaConsumer class based on java client api (dpkp PR 234)
  • Add KeyedProducer.send_messages api (pubnub PR 277)
  • Fix consumer pending() method (jettify PR 276)
  • Update low-level demo in README (sunisdown PR 274)
  • Include key in KeyedProducer messages (se7entyse7en PR 268)
  • Fix SimpleConsumer timeout behavior in get_messages (dpkp PR 238)
  • Fix error in consumer.py test against max_buffer_size (rthille/wizzat PR 225/242)
  • Improve string concat performance on pypy / py3 (dpkp PR 233)
  • Reorg directory layout for consumer/producer/partitioners (dpkp/wizzat PR 232/243)
  • Add OffsetCommitContext (locationlabs PR 217)
  • Metadata Refactor (dpkp PR 223)
  • Add Python 3 support (brutasse/wizzat - PR 227)
  • Minor cleanups - imports / README / PyPI classifiers (dpkp - PR 221)
  • Fix socket test (dpkp - PR 222)
  • Fix exception catching bug in test_failover_integration (zever - PR 216)

0.9.2 (Aug 26, 2014)

  • Warn users that async producer does not reliably handle failures (dpkp - PR 213)
  • Fix spurious ConsumerFetchSizeTooSmall error in consumer (DataDog - PR 136)
  • Use PyLint for static error checking (dpkp - PR 208)
  • Strictly enforce str message type in producer.send_messages (dpkp - PR 211)
  • Add test timers via nose-timer plugin; list 10 slowest timings by default (dpkp)
  • Move fetching last known offset logic to a stand alone function (zever - PR 177)
  • Improve KafkaConnection and add more tests (dpkp - PR 196)
  • Raise TypeError if necessary when encoding strings (mdaniel - PR 204)
  • Use Travis-CI to publish tagged releases to pypi (tkuhlman / mumrah)
  • Use official binary tarballs for integration tests and parallelize travis tests (dpkp - PR 193)
  • Improve new-topic creation handling (wizzat - PR 174)

0.9.1 (Aug 10, 2014)

  • Add codec parameter to Producers to enable compression (patricklucas - PR 166)
  • Support IPv6 hosts and network (snaury - PR 169)
  • Remove dependency on distribute (patricklucas - PR 163)
  • Fix connection error timeout and improve tests (wizzat - PR 158)
  • SimpleProducer randomization of initial round robin ordering (alexcb - PR 139)
  • Fix connection timeout in KafkaClient and KafkaConnection (maciejkula - PR 161)
  • Fix seek + commit behavior (wizzat - PR 148)

0.9.0 (Mar 21, 2014)

  • Connection refactor and test fixes (wizzat - PR 134)
  • Fix when partition has no leader (mrtheb - PR 109)
  • Change Producer API to take topic as send argument, not as instance variable (rdiomar - PR 111)
  • Substantial refactor and Test Fixing (rdiomar - PR 88)
  • Fix Multiprocess Consumer on windows (mahendra - PR 62)
  • Improve fault tolerance; add integration tests (jimjh)
  • PEP8 / Flakes / Style cleanups (Vetoshkin Nikita; mrtheb - PR 59)
  • Setup Travis CI (jimjh - PR 53/54)
  • Fix import of BufferUnderflowError (jimjh - PR 49)
  • Fix code examples in README (StevenLeRoux - PR 47/48)

0.8.0

  • Changing auto_commit to False in SimpleConsumer, until 0.8.1 is release offset commits are unsupported
  • Adding fetch_size_bytes to SimpleConsumer constructor to allow for user-configurable fetch sizes
  • Allow SimpleConsumer to automatically increase the fetch size if a partial message is read and no other messages were read during that fetch request. The increase factor is 1.5
  • Exception classes moved to kafka.common