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Posted to commits@pulsar.apache.org by ur...@apache.org on 2022/03/30 04:01:11 UTC

[pulsar-site] branch feature/release-notes-legacy created (now 308bea0)

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urfree pushed a change to branch feature/release-notes-legacy
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      at 308bea0  feat: add release notes legacy

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     new 308bea0  feat: add release notes legacy

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[pulsar-site] 01/01: feat: add release notes legacy

Posted by ur...@apache.org.

This is an automated email from the ASF dual-hosted git repository.

urfree pushed a commit to branch feature/release-notes-legacy
in repository https://gitbox.apache.org/repos/asf/pulsar-site.git

commit 308bea0005eb6cbb360195881391719f202fccbf
Author: Li Li <ur...@apache.org>
AuthorDate: Wed Mar 30 12:01:01 2022 +0800

    feat: add release notes legacy
    
    Signed-off-by: Li Li <ur...@apache.org>
---
 site2/website-next/release-notes/all.md    |    5 +-
 site2/website-next/release-notes/legacy.md | 1105 ++++++++++++++++++++++++++++
 2 files changed, 1108 insertions(+), 2 deletions(-)

diff --git a/site2/website-next/release-notes/all.md b/site2/website-next/release-notes/all.md
index e225018..809f1bf 100644
--- a/site2/website-next/release-notes/all.md
+++ b/site2/website-next/release-notes/all.md
@@ -19,15 +19,16 @@ slug: /
 
 #### Previous versions
 
-All release notes of previous versions are available at [here]().
+All release notes of previous versions are available at [here](/release-notes/legacy).
 
 ## Client Release Notes
 
 > **Tip**
 > 
-> The code repos of **Java, C++, Python, and WebSocket** clients are hosted in the [Pulsar main repo](https://github.com/apache/pulsar) and these clients are released with Pulsar. Their release notes of previous versions are parts of Pulsar release notes. You can check them out at [here]().
+> The code repos of **Java, C++, Python, and WebSocket** clients are hosted in the [Pulsar main repo](https://github.com/apache/pulsar) and these clients are released with Pulsar. Their release notes of previous versions are parts of Pulsar release notes. You can check them out at [here](/release-notes/legacy).
 > 
 > The code repos of **Go, Node.js, and C#** clients are hosted outside of the Pulsar main repo and these clients are not released with Pulsar. They have independent release notes in their repos and all of them are synced to this page.
+
 ### Java
 #### 2.9.x
 [2.9.1](/release-notes/docs/client-java-2.9.1)&ensp;&ensp;[2.9.0](/release-notes/docs/client-java-2.9.0)&ensp;&ensp;  
diff --git a/site2/website-next/release-notes/legacy.md b/site2/website-next/release-notes/legacy.md
new file mode 100644
index 0000000..a49423c
--- /dev/null
+++ b/site2/website-next/release-notes/legacy.md
@@ -0,0 +1,1105 @@
+---
+id: legacy
+title: Apache Pulsar Release Notes (Legacy)
+sidebar_label: Legacy 
+---
+
+### 2.4.2
+
+#### 2019-12-04
+
+#### Fixes
+
+* Fixed don't set interrupt flag again after catching interrupt exception in Pulsar Client [#5643](https://github.com/apache/pulsar/pull/5643)
+* Fixed data is not deleted after expiration due to connected readers [#5621](https://github.com/apache/pulsar/pull/5621)
+* Fixed the go client docs missing in website [#5595](https://github.com/apache/pulsar/pull/5595)
+* Fixed schema def build error with protobuf schema [#5569](https://github.com/apache/pulsar/pull/5569)
+* Fixed docs about reset cursor [#5551](https://github.com/apache/pulsar/pull/5551)
+* Fixed repeated initialization of connectorsManager [#5545](https://github.com/apache/pulsar/pull/5545)
+* Fixed Functions unnecessarily restart during FunctionRuntimeManager init phase [#5527](https://github.com/apache/pulsar/pull/5527)
+* Fixed list non-persistent topics shows the persistent topics [#5502](https://github.com/apache/pulsar/pull/5502)
+* Return after triggering callback with empty result [#5500](https://github.com/apache/pulsar/pull/5500)
+* Fixed dispatcher skipping delivery of a batch during concurrent replays [#5499](https://github.com/apache/pulsar/pull/5499)
+* Fixed reader_listener option for Python API [#5487](https://github.com/apache/pulsar/pull/5487)
+* Fixed wrongly report "3600 messages have timed-out" [#5477](https://github.com/apache/pulsar/pull/5477)
+* Fixed broken custom auth-provider that uses authenticationData [#5462](https://github.com/apache/pulsar/pull/5462)
+* Fixed negative ack tracker constructor sequence [#5453](https://github.com/apache/pulsar/pull/5453)
+* Fixed StringSchema static initialization  [#5445](https://github.com/apache/pulsar/pull/5445)
+* Fixed message corruption on OOM for batch messages [#5443](https://github.com/apache/pulsar/pull/5443)
+* Fixed couple functions related integration tests [#5434](https://github.com/apache/pulsar/pull/5434)
+* Fixed bug that namespace policies does not take effect due to NPE [#5408](https://github.com/apache/pulsar/pull/5408)
+* Fixed race condition : Failed to read-more entries on dispatcher [#5391](https://github.com/apache/pulsar/pull/5391)
+* Fixed potential deadlock that can occur in addConsumer [#5371](https://github.com/apache/pulsar/pull/5371)
+* Fixed proxy to be able to re-send request body [#5361](https://github.com/apache/pulsar/pull/5361)
+* Fixed pulsar can't load the customized SerDe [#5357](https://github.com/apache/pulsar/pull/5357)
+* Fixed instability in Pulsar Function window integration test [#5337](https://github.com/apache/pulsar/pull/5337)
+* Fixed bk write failure, use signals to resume writing [#5322](https://github.com/apache/pulsar/pull/5322)
+* Fixed bad_weak_ptr error when closing producer [#5315](https://github.com/apache/pulsar/pull/5315)
+* Fixed typo(massage->message) causing prometheus metrics display error [#5299](https://github.com/apache/pulsar/pull/5299)
+* Fixed invalidate cache on zk-cache timeout [#5298](https://github.com/apache/pulsar/pull/5298)
+* Fixed memory leak caused by not being executed ClientConnection destructor [#5286](https://github.com/apache/pulsar/pull/5286)
+* Fixed producer blocked after send an over size message while batch enabled [#5282](https://github.com/apache/pulsar/pull/5282)
+* Fixed race condition while triggering message redelivery after an ack-timeout event [#5276](https://github.com/apache/pulsar/pull/5276)
+* Fixed behavior when getting a key from functions state that doesn't exist [#5272](https://github.com/apache/pulsar/pull/5272)
+* Fixed Cmake to build _pulsar for osx [#5263](https://github.com/apache/pulsar/pull/5263)
+* Fixed client backoff setting does not take effect [#5261](https://github.com/apache/pulsar/pull/5261)
+* Fixed memory leak caused by deadline_timer holding object reference [#5246](https://github.com/apache/pulsar/pull/5246)
+* Fixed in Message Deduplication that may cause incorrect client/broker interaction [#5243](https://github.com/apache/pulsar/pull/5243)
+* Fixed bug that fails to search namespace bundle due to NPE [#5191](https://github.com/apache/pulsar/pull/5191)
+* Fixed bug that message delivery stops after resetting cursor for failover subscription [#5185](https://github.com/apache/pulsar/pull/5185)
+* Fixed exception type check order bug [#5174](https://github.com/apache/pulsar/pull/5174)
+* Fixed spark receiver to account for all the consumer config options [#5152](https://github.com/apache/pulsar/pull/5152)
+* Fixed broker fails to start with function worker enabled and broker client using TLS [#5151](https://github.com/apache/pulsar/pull/5151)
+* Fixed deadlock when resetting cursor [#5136](https://github.com/apache/pulsar/pull/5136)
+* Fixed windowed functions were broken when we changed java function instance to use classloaders [#5117](https://github.com/apache/pulsar/pull/5117)
+* Fixed storage size always 0 without subscription [#5108](https://github.com/apache/pulsar/pull/5108)
+
+#### Enhancements
+
+* Add subscribe position param for consumer of sink [#5532](https://github.com/apache/pulsar/pull/5532)
+* Efficiency improvements for delay delivery tracker [#5498](https://github.com/apache/pulsar/pull/5498)
+* Add is_read_compacted to create_reader() in python API [#5483](https://github.com/apache/pulsar/pull/5483)
+* Make some common use method of ManagedLedger public [#5472](https://github.com/apache/pulsar/pull/5472)
+* Avoid leak on publish failure on batch message [#5442](https://github.com/apache/pulsar/pull/5442)
+* Record message failure and avoid exiting from process on publish failure [#5441](https://github.com/apache/pulsar/pull/5441)
+* Add support for partitioned topic consumer seek by time [#5435](https://github.com/apache/pulsar/pull/5435)
+* Add default loader for latest pyyaml [#5432](https://github.com/apache/pulsar/pull/5432)
+* Trim messages which less than mark delete position for message redelivery [#5378](https://github.com/apache/pulsar/pull/5378)
+* Make skip all messages async [#5375](https://github.com/apache/pulsar/pull/5375)
+* Set default ensemble size to 2 in service conf, to match broker.conf [#5339](https://github.com/apache/pulsar/pull/5339)
+* Only seek when reading unexpected entry [#5356](https://github.com/apache/pulsar/pull/5356)
+* Don't require both region and endpoint to be specified [#5355](https://github.com/apache/pulsar/pull/5355)
+* If cursor is not durable, close dispatcher when all consumers are removed from subscription [#5340](https://github.com/apache/pulsar/pull/5340)
+* Disable stickyRead by default [#5321](https://github.com/apache/pulsar/pull/5321)
+* Allow to specify delivery delay in C++ client [#5317](https://github.com/apache/pulsar/pull/5317)
+* Add debug log + fix thread-factory name  [#5302](https://github.com/apache/pulsar/pull/5302)
+* Don't attempt to append on read-only cursor ledger [#5297](https://github.com/apache/pulsar/pull/5297)
+* Close previous dispatcher when subscription type changes [#5288](https://github.com/apache/pulsar/pull/5288)
+* Improve error handling logic for effectively once [#5271](https://github.com/apache/pulsar/pull/5271)
+* Upgrade dependencies for security fixes [#5232](https://github.com/apache/pulsar/pull/5232)
+* Ensure consumer background tasks are cancelled after subscribe failures [#5204](https://github.com/apache/pulsar/pull/5204)
+* Added missing enum value KeyShared on the python wrapper [#5196](https://github.com/apache/pulsar/pull/5196)
+* Make some member variables of Dispatcher volatile [#5193](https://github.com/apache/pulsar/pull/5193)
+* Ensure getting list of topics for namespace is handled asynchronously [#5188](https://github.com/apache/pulsar/pull/5188)
+* Close RateLimiter instance [#5155](https://github.com/apache/pulsar/pull/5155)
+* Throw an error if the key was not specified for querying state [#5145](https://github.com/apache/pulsar/pull/5145)
+* Allow configuring region aware placement related settings [#5100](https://github.com/apache/pulsar/pull/5100)
+* DeleteBookieRack should remove the rack info from zookeeper [#5084](https://github.com/apache/pulsar/pull/5084)
+* Use "info" as the default root logger level [#5079](https://github.com/apache/pulsar/pull/5079)
+* Modify BatcherBuilder interface and it's subs to implement java.io.Serializable, otherwise java.io.NotSerializableException occurs when we use plusar-flink-connector [#5068](https://github.com/apache/pulsar/pull/5068)
+* Don't return DEFAULT_RACK if ZkBookieRackAffinityMapping can't resolve network location [#5067](https://github.com/apache/pulsar/pull/5067)
+* Reload zk cache asynchronously [#5049](https://github.com/apache/pulsar/pull/5049)
+* Add different cache flags to ConcurrentOpenLongPairRangeSet for size() and toString() [#5040](https://github.com/apache/pulsar/pull/5040)
+* Introduce number of threads in perf producer program [#5036](https://github.com/apache/pulsar/pull/5036)
+* Completing connector configuration [#4999](https://github.com/apache/pulsar/pull/4999)
+* Add checkstyle validation and fix style violations in the common module [#4989](https://github.com/apache/pulsar/pull/4989)
+* Trim deleted entries after recover cursor [#4987](https://github.com/apache/pulsar/pull/4987)
+* Expose getLastMessageId method in ConsumerImpl [#4911](https://github.com/apache/pulsar/pull/4911)
+* Add a documentation page for metrics reference [#4910](https://github.com/apache/pulsar/pull/4910)
+* Provide a convenient method for C++ client producer batch container [#4885](https://github.com/apache/pulsar/pull/4885)
+* Add schema admin api get schema info with schema version [#4877](https://github.com/apache/pulsar/pull/4877)
+* Return Message ID for send for cpp and cgo client [#4811](https://github.com/apache/pulsar/pull/4811)
+* Add the schema admin api [#4800](https://github.com/apache/pulsar/pull/4800)
+* Clarify how retention interacts with readers [#4780](https://github.com/apache/pulsar/pull/4780)
+* Get schema info with topic partition [#4751](https://github.com/apache/pulsar/pull/4751)
+* Remove failed stale producer from the connection [#4741](https://github.com/apache/pulsar/pull/4741)
+* Update logic for picking active consumer for failover subscription on non-partitioned topic [#4604](https://github.com/apache/pulsar/pull/4604)
+
+### 2.4.1
+
+#### 2019-08-30
+
+#### Fixes
+
+* Fixed wrong serialize of batchBuilder in ProducerConfigurationData [#4620](https://github.com/apache/pulsar/pull/4620)
+* Fixed SchemaInfo properties losing when registering schema using admin api [#4617](https://github.com/apache/pulsar/pull/4617)
+* Fixed wrong topic domain returned by get partitioned topic [#4613](https://github.com/apache/pulsar/pull/4613)
+* Fixed pulsar-dashboard wrong count number of bundles [#4637](https://github.com/apache/pulsar/pull/4637)
+* Fixed partitionIndex error in consumer for a single partitioned topic [#4591](https://github.com/apache/pulsar/pull/4591)
+* Fixed deadlock on get-status rest-api call in broker [#4616](https://github.com/apache/pulsar/pull/4616)
+* Fixed deadlock in subscribeAsync demo [#4649](https://github.com/apache/pulsar/pull/4649)
+* Fixed C++ client lookup error over HTTP in standalone [#4625](https://github.com/apache/pulsar/pull/4625)
+* Fixed NPE at managed-ledger when fetch reader internal-stats [#4615](https://github.com/apache/pulsar/pull/4615)
+* Fixed C++ client producer sendAsync() hang when no enough batched message [#4657](https://github.com/apache/pulsar/pull/4657)
+* Fixed issue when submitting NAR via file url [#4577](https://github.com/apache/pulsar/pull/4577)
+* Renamed C++ logger enum names to avoid conflicts with compiler macros [#4664](https://github.com/apache/pulsar/pull/4664)
+* Fixed leaking of pulsar-io-influxdb in distribution [#4678](https://github.com/apache/pulsar/pull/4678)
+* Fixed the default port for https and http in admin client [#4623](https://github.com/apache/pulsar/pull/4623)
+* Fixed wrong schema delete when checking compatibility [#4669](https://github.com/apache/pulsar/pull/4669)
+* Fixed `docker/publish.sh` doesn't work for pulsar-all and pulsar-standalone images [#4705](https://github.com/apache/pulsar/pull/4705)
+* Fixed integration-test failure when execute pip3 install pulsar_client [#4754](https://github.com/apache/pulsar/pull/4754)
+* Added log folder in `pulsa-function-go` back [#4736](https://github.com/apache/pulsar/pull/4736)
+* Fixed Pulsar SQL NPE when predicate pushdown for publish_time [#4744](https://github.com/apache/pulsar/pull/4744)
+* Fixed redelivered message logic of partition topic [#4653](https://github.com/apache/pulsar/pull/4653)
+* Fixed C++ log level names in Log4cxxLogger [#4735](https://github.com/apache/pulsar/pull/4735)
+* Fixed go function package not executable [#4743](https://github.com/apache/pulsar/pull/4743)
+* Added anonymous role to proxy configuration [#4733](https://github.com/apache/pulsar/pull/4733)
+* Added kubernetes namespace to function instance url [#4701](https://github.com/apache/pulsar/pull/4701)
+* Fixed go function not parse conf content first [#4746](https://github.com/apache/pulsar/pull/4746)
+* Made PulsarKafkaProducer thread safe [#4745](https://github.com/apache/pulsar/pull/4745)
+* Fixed messages not get acked if there is not sink topic [#4815](https://github.com/apache/pulsar/pull/4815)
+* Fixed bug when function package jar/py/go and runtime is not set [#4814](https://github.com/apache/pulsar/pull/4814)
+* Fixed topic loading in rest-api not time out in zooKeeperOperationTimeoutSeconds [#4805](https://github.com/apache/pulsar/pull/4805)
+* Fixed default retention policy miss upload to zk [#4810](https://github.com/apache/pulsar/pull/4810)
+* Added checking function implements correct interface [#4844](https://github.com/apache/pulsar/pull/4844)
+* Fixed retention size policy bug [#4825](https://github.com/apache/pulsar/pull/4825)
+* Catch throwable in interceptors of consumer and producer [#4860](https://github.com/apache/pulsar/pull/4860)
+* Fixed first position in managedLedger is ahead of the last [#4853](https://github.com/apache/pulsar/pull/4853)
+* Fixed concurrent access of `uninitializedCursors` in `ManagedLedgerImpl.asyncOpenCursor` [#4837](https://github.com/apache/pulsar/pull/4837)
+* Fixed schema not found handling in pulsar-sql [#4890](https://github.com/apache/pulsar/pull/4890)
+* Fixed requests not respect no_proxy env variable in dashboard [#4867](https://github.com/apache/pulsar/pull/4867)
+* Fixed broken replication msg to specific cluster [#4930](https://github.com/apache/pulsar/pull/4930)
+* Fixed dashboard peek parse message error [#4918](https://github.com/apache/pulsar/pull/4918)
+* Fixed StructSchema reader cache loading logic [#4962](https://github.com/apache/pulsar/pull/4962)
+* Fixed fd leakage in FunctionActioner.downloadFile [#4970](https://github.com/apache/pulsar/pull/4970)
+* Fixed python function str bytes convert in example custom_object_function.py [#4946](https://github.com/apache/pulsar/pull/4946)
+* Fixed NPE while cleaning up namespace node [#4965](https://github.com/apache/pulsar/pull/4965)
+* Fixed the getSchema logic in pulsar proxy [#4975](https://github.com/apache/pulsar/pull/4975)
+* Fixed warning by add default loader for latest pyyaml [#4974](https://github.com/apache/pulsar/pull/4974)
+* Fixed snappy compressor compile error in pulsar-client-cpp [#4972](https://github.com/apache/pulsar/pull/4972)
+* Reinitialize certain components for externally managed runtimes when moving functions [#5007](https://github.com/apache/pulsar/pull/5007)
+* Upgraded jackson-databind [#5011](https://github.com/apache/pulsar/pull/5011)
+* Fixed the problem of missing dependencies less in docker [#5034](https://github.com/apache/pulsar/pull/5034)
+* Fixed duplicated Prometheus TYPE in broker metrics [#4183](https://github.com/apache/pulsar/pull/4183)
+* Fixed pulsar sink and source state by init state earlier [#5046](https://github.com/apache/pulsar/pull/5046)
+
+#### Enhancements
+
+* Re-factored Component implementation [#4541](https://github.com/apache/pulsar/pull/4541)
+* Provided a clock for generating publish timestamp for producers [#4562](https://github.com/apache/pulsar/pull/4562)
+* Reduced unnecessary track message calls [#4595](https://github.com/apache/pulsar/pull/4595)
+* Supported dynamic configure with escape char [#4611](https://github.com/apache/pulsar/pull/4611)
+* Added null check for function/source/sink configs [#4627](https://github.com/apache/pulsar/pull/4627)
+* Added delete dynamic config api [#4614](https://github.com/apache/pulsar/pull/4614)
+* Made broker replication mtls configuration dynamic [#4609](https://github.com/apache/pulsar/pull/4609)
+* Added authorization to function worker REST endpoints [#4628](https://github.com/apache/pulsar/pull/4628)
+* Improved and add authorization to function download and upload [#4644](https://github.com/apache/pulsar/pull/4644)
+* Allowed consumer retrieve the sequence id that the producer set [#4645](https://github.com/apache/pulsar/pull/4645)
+* Added perPartition parameter to partitioned-stats API [#4639](https://github.com/apache/pulsar/pull/4639)
+* Supported Pulsar schema for pulsar kafka client wrapper [#4534](https://github.com/apache/pulsar/pull/4534)
+* Supported delete and update event for JDBC Sink [#4358](https://github.com/apache/pulsar/pull/4358)
+* Cleaned up tests in the presto module [#4683](https://github.com/apache/pulsar/pull/4683)
+* Added allowAutoTopicCreation to broker.conf and related configuration [#4694](https://github.com/apache/pulsar/pull/4694)
+* Changed to use classloaders to load Java functions [#4685](https://github.com/apache/pulsar/pull/4685)
+* Removed fixed server type check in kerberos [#4758](https://github.com/apache/pulsar/pull/4758)
+* Changed type of publish_time to timestamp [#4757](https://github.com/apache/pulsar/pull/4757)
+* Added read-timeout to admin-request [#4762](https://github.com/apache/pulsar/pull/4762)
+* Added checking of deleted schema when adding schema [#4731](https://github.com/apache/pulsar/pull/4731)
+* Added strand to C++ client for exclusive control [#4750](https://github.com/apache/pulsar/pull/4750)
+* Added support to create partitioned topic with 1 partition [#4764](https://github.com/apache/pulsar/pull/4764)
+* Added getters and setters to PulsarService & BrokerService [#4709](https://github.com/apache/pulsar/pull/4709)
+* Added configure ack-timeout tick time [#4760](https://github.com/apache/pulsar/pull/4760)
+* Added options to rewrite namespace delimiter for pulsar sql [#4749](https://github.com/apache/pulsar/pull/4749)
+* Made Pulsar SQL supports pulsar's primitive schema [#4728](https://github.com/apache/pulsar/pull/4728)
+* Added basic authentication capabilities to Pulsar SQL [#4779](https://github.com/apache/pulsar/pull/4779)
+* Improved SchemaInfoProvider to fetch schema info asynchronously [#4836](https://github.com/apache/pulsar/pull/4836)
+* Supported KeyValue schema use AUTO_CONSUME as key/value schema [#4839](https://github.com/apache/pulsar/pull/4839)
+* Provided action type for insert in pulsar-io-jdbc [#4862](https://github.com/apache/pulsar/pull/4862)
+* Made partition as internal column in pulsar-sql [#4888](https://github.com/apache/pulsar/pull/4888)
+* Added option to disable authentication for proxy /metrics [#4921](https://github.com/apache/pulsar/pull/4921)
+
+
+
+### 2.4.0
+
+#### 2019-06-30
+
+#### PIPs
+
+* PIP-26: [Added support for delayed message delivery](https://github.com/apache/pulsar/wiki/PIP-26%3A-Delayed-Message-Delivery)
+[#4062](https://github.com/apache/pulsar/pull/4062), note that messages are only delayed on shared subscriptions.
+* PIP-28: [Pulsar Proxy Gateway Improvement](https://github.com/apache/pulsar/wiki/PIP-28%3A-Pulsar-Proxy-Gateway-Improvement) [#3915](https://github.com/apache/pulsar/pull/3915)
+* PIP-29: [One package for both pulsar client and pulsar admin](https://github.com/apache/pulsar/wiki/PIP-29%3A-One-package-for-both-pulsar-client-and-pulsar-admin) [#3662](<https://github.com/apache/pulsar/pull/3662>)
+* PIP-30: [Change authentication provider API to support mutual authentication for Kerberos Authentication](https://github.com/apache/pulsar/wiki/PIP-30%3A-change-authentication-provider-API-to-support-mutual-authentication) [#3677](https://github.com/apache/pulsar/pull/3677)
+[#3821](https://github.com/apache/pulsar/pull/3821) [#3997](https://github.com/apache/pulsar/pull/3997)
+* PIP-32: [Go Function API, Instance and LocalRun](https://github.com/apache/pulsar/wiki/PIP-32%3A-Go-Function-API%2C-Instance-and-LocalRun) [#3854](https://github.com/apache/pulsar/pull/3854) [#4008](https://github.com/apache/pulsar/pull/4008) [#4174](https://github.com/apache/pulsar/pull/4174)
+* PIP-33: [Replicated subscriptions](https://github.com/apache/pulsar/wiki/PIP-33%3A-Replicated-subscriptions) to keep subscription state in-sync across multiple geographical regions [#4299](https://github.com/apache/pulsar/pull/4299) [#4340](https://github.com/apache/pulsar/pull/4340) [#4354](https://github.com/apache/pulsar/pull/4354) [#4396](https://github.com/apache/pulsar/pull/4396)
+* PIP-34: [Key_Shared](https://github.com/apache/pulsar/wiki/PIP-34%3A-Add-new-subscribe-type-Key_Failover) subscription, [Architecture for Key_Shared](http://pulsar.apache.org/docs/en/concepts-messaging/#key_shared)  [#4079](https://github.com/apache/pulsar/pull/4079) [#4120](https://github.com/apache/pulsar/pull/4120) [#4335](https://github.com/apache/pulsar/pull/4335) [#4372](https://github.com/apache/pulsar/pull/4372) [#4407](https://github.com/apache/pulsar/pull/4407) [#4406](https: [...]
+* PIP-36: [Support set message size in broker.conf](https://github.com/apache/pulsar/wiki/PIP-36%3A-Max-Message-Size) [#4247](https://github.com/apache/pulsar/pull/4247)
+
+#### Fixes
+
+* Fix possible message loss using peer-cluster feature [#3426](https://github.com/apache/pulsar/pull/3426)
+* Fix pulsar standalone does not read zk port from conf/standalone.conf [#3790](https://github.com/apache/pulsar/pull/3790)
+* Fix some issues of ZkIsolatedBookieEnsemblePlacementPolicy [#3917](https://github.com/apache/pulsar/pull/3917) [#3918](https://github.com/apache/pulsar/pull/3918)
+* Fix NPE when unload non-existent topic [#3946](https://github.com/apache/pulsar/pull/3946)
+* Fix race condition while deleting global topic [#4173](https://github.com/apache/pulsar/pull/4173)
+* Fix deadlock on skip messages [#4411](https://github.com/apache/pulsar/pull/4411)
+* Fix NPE when closing batch during a reconnection [#4427](https://github.com/apache/pulsar/pull/4427)
+* Fix race condition of read-timeout task in managed ledger [#4437](https://github.com/apache/pulsar/pull/4437)
+* Disable sticky read by default [#4526](https://github.com/apache/pulsar/pull/4526)
+* Fix race condition between timeout-task and add-call complete [#4455](https://github.com/apache/pulsar/pull/4455)
+
+#### Enhancements
+
+* Optimize message replay for large backlog consumer [#3732](https://github.com/apache/pulsar/pull/3732)
+* Added support for websocket produce/consume command [#3835](https://github.com/apache/pulsar/pull/3835)
+* Added support for TTL config in broker.conf [#3898](https://github.com/apache/pulsar/pull/3898)
+* Reduce memory used in ClientCnx for pending lookups [#4104](https://github.com/apache/pulsar/pull/4104)
+* Reduce number of hashmap sections for ledger handles cache [#4102](https://github.com/apache/pulsar/pull/4102)
+* Added backlog and offloaded size in Prometheus stats [#4150](https://github.com/apache/pulsar/pull/4150)
+* Added support for configure the managed ledger cache eviction frequency [#4066](https://github.com/apache/pulsar/pull/4066)
+* Added support to avoid payload copy when inserting into managed ledger cache [#4197](https://github.com/apache/pulsar/pull/4197)
+* Added support to cache unack-messageId into OpenRangeSet [#3819](https://github.com/apache/pulsar/pull/3819)
+* Added support configure static PulsarByteBufAllocator to handle OOM errors [#4196](https://github.com/apache/pulsar/pull/4196)
+* Auto refresh new tls certs for jetty webserver [#3645](<https://github.com/apache/pulsar/pull/3645>)
+* Create non-persistent topic by pulsar-admin/rest api [#3625](<https://github.com/apache/pulsar/pull/3625>)
+* Consumer priority-level in Failover subscription [#2954](https://github.com/apache/pulsar/pull/2954)
+
+#### Security
+
+* Added support for other algorithms in token auth [#4528](https://github.com/apache/pulsar/pull/4528)
+
+#### Namespace Policies
+
+* Added support for tenant based bookie isolation [#3933](https://github.com/apache/pulsar/pull/3933)
+* Added support for secondary bookie isolation group at namespace [#4458](https://github.com/apache/pulsar/pull/4458)
+* Added support for secondary bookie-isolation-group  [#4261](https://github.com/apache/pulsar/pull/4261)
+* Added support for replicator rate limit between clusters [#4273](https://github.com/apache/pulsar/pull/4273)
+* Disable backlog quota check by default [#4320](https://github.com/apache/pulsar/pull/4320)
+
+#### Tiered Storage
+
+* Added support for Pulsar SQL to read data from tiered storage [#4045](https://github.com/apache/pulsar/pull/4045)
+
+#### Pulsar Schema
+
+* Added schema versioning to support multi version messages produce and consume [#3876](https://github.com/apache/pulsar/pull/3876) [#3670](https://github.com/apache/pulsar/pull/3670) [#4211](https://github.com/apache/pulsar/pull/4211) [#4325](https://github.com/apache/pulsar/pull/4325) [#4548](https://github.com/apache/pulsar/pull/4548)
+* Added `TRANSITIVE` schema check strategies to support compatibility check over all existing schemas  [#4214](https://github.com/apache/pulsar/pull/4214)
+* Added schema data validator [#4360](https://github.com/apache/pulsar/pull/4360)
+* Added support for delete schema when deleting a topic [#3941](https://github.com/apache/pulsar/pull/3941)
+* Added generic record builder [#3690](https://github.com/apache/pulsar/pull/3690)
+
+#### Pulsar IO
+
+* Added IO connector for flume source and sink [#3597](<https://github.com/apache/pulsar/pull/3597>)
+* Added IO connector for redis sink [#3700](https://github.com/apache/pulsar/pull/3700)
+* Added IO connector for solr sink [#3885](https://github.com/apache/pulsar/pull/3885)
+* Hide kafka-connecter details for easy use debezium connector [#3825](https://github.com/apache/pulsar/pull/3825)
+* Added  IO connector for debezium PostgreSQL source [#3924](https://github.com/apache/pulsar/pull/3924)
+* Enhancements for RabbitMQ source configuration [#3937](https://github.com/apache/pulsar/pull/3937)
+* Added IO connector for RabbitMQ sink [#3967](https://github.com/apache/pulsar/pull/3967)
+* Added IO connector for InfluxDB sink [#4017](https://github.com/apache/pulsar/pull/4017)
+
+#### Pulsar functions
+
+* Added support for authentication [#3735](https://github.com/apache/pulsar/pull/3735) [#3874](https://github.com/apache/pulsar/pull/3874) [#4198](https://github.com/apache/pulsar/pull/4198)
+* Fix NPE when stats manager not initialized [#3891](https://github.com/apache/pulsar/pull/3891)
+* Added async state manipulation methods [#3798](https://github.com/apache/pulsar/pull/3978)
+* Fix fail to update functions in effectively-once mode [#3993](https://github.com/apache/pulsar/issues/3993)
+* Added labels to function statefulsets and services [#4038](https://github.com/apache/pulsar/pull/4038)
+* Added support for set key for message when using function publish [#4005](https://github.com/apache/pulsar/pull/4005)
+* Use negative acknowledge to instead ackTimeout [#4103](https://github.com/apache/pulsar/pull/4103)
+* Fix backward compatibility with 2.2 auth not working [#4241](https://github.com/apache/pulsar/pull/4241)
+
+#### Java client
+
+* Added negative acks [#3703](https://github.com/apache/pulsar/pull/3703)
+* Added support for backoff strategy configuration [#3848](https://github.com/apache/pulsar/pull/3848)
+* Added support for configure TypedMessageBuilder through a Map conf object [#4015](https://github.com/apache/pulsar/pull/4015)
+* Added interceptor for negative ack send [#3962](https://github.com/apache/pulsar/pull/3962)
+* Added support for seek operate on reader [#4031](https://github.com/apache/pulsar/pull/4031)
+* Store key part of KeyValue schema into pulsar message keys [#4117](https://github.com/apache/pulsar/pull/4117)
+* Added interceptor for ack timeout  [#4300](https://github.com/apache/pulsar/pull/4300)
+* Added support for snappy compression [#4259](https://github.com/apache/pulsar/pull/4259)
+* Added support for key based batcher [#4435](https://github.com/apache/pulsar/pull/4435)
+
+#### Python client
+
+* Added negative acks [#3816](https://github.com/apache/pulsar/pull/3816) 
+* Added support for snappy compression [#4319](https://github.com/apache/pulsar/pull/4319)
+
+#### Go client
+
+* Added negative acks [#3817](https://github.com/apache/pulsar/pull/3817)
+* Added support for go schema [#3904](https://github.com/apache/pulsar/pull/3904)
+* Added support for snappy compression [#4319](https://github.com/apache/pulsar/pull/4319)
+* Added support for Key_Shared subscription [#4465](https://github.com/apache/pulsar/pull/4465)
+
+#### C++ client
+
+* Added negative acks [#3750](https://github.com/apache/pulsar/pull/3750)
+* Fix ack timeout when subscribing to regex topic [#3897](https://github.com/apache/pulsar/pull/3879)
+* Added support for Key_Shared subscription [#4366](https://github.com/apache/pulsar/pull/4366)
+
+#### Adaptors
+
+* In Kafka client wrapper, added some configurations [#3753](https://github.com/apache/pulsar/pull/3753) [#3797](https://github.com/apache/pulsar/pull/3797) [#3843](https://github.com/apache/pulsar/pull/3843) [#3887](https://github.com/apache/pulsar/pull/3887) [#3991](https://github.com/apache/pulsar/pull/3911)
+* In Apache Flink connector, allow to specify a custom Pulsar producer [#3894](https://github.com/apache/pulsar/pull/3894) and client authentication [#3949](https://github.com/apache/pulsar/pull/3949)
+* In Apache Flink connector, added support for accept ClientConfigurationData, ProducerConfigurationData, ConsumerConfigurationData [#4232](https://github.com/apache/pulsar/pull/4232)
+* In Apache Storm connector, fix NPE while emitting next tuple [#3991](https://github.com/apache/pulsar/pull/3991) and some add some enhancements [#4280](https://github.com/apache/pulsar/pull/4280) [#4239](https://github.com/apache/pulsar/pull/4239)   [#4238](https://github.com/apache/pulsar/pull/4238) [#4236](https://github.com/apache/pulsar/pull/4236) [#4495](https://github.com/apache/pulsar/pull/4495) [#4494](https://github.com/apache/pulsar/pull/4494)
+
+For a complete list of issues fixed, see
+
+https://github.com/apache/pulsar/milestone/20?closed=1
+
+https://github.com/apache/pulsar/releases/tag/v2.4.0
+
+### 2.3.2
+
+#### 2019-05-30
+
+#### Fixes
+
+* Validate admin operation on topic with authoritative parameter [#4270](https://github.com/apache/pulsar/pull/4270)
+* fix bug with source local run [#4278](https://github.com/apache/pulsar/pull/4278)
+* fix cannot use size (type _Ctype_int) as type _Ctype_ulong [#4212](https://github.com/apache/pulsar/pull/4212)
+* Fix segfault in c++ producer [#4219](https://github.com/apache/pulsar/pull/4219)
+* AlwaysCompatible doesn't use AlwaysSchemaValidator in 2.3.1 component/schemaregistry [#4181](https://github.com/apache/pulsar/pull/4181)
+* Avoid potentially blocking method during topic ownership check [#4190](https://github.com/apache/pulsar/pull/4190)
+* [pulsar-broker]Fix: client-producer can't reconnect due to failed producer-future on cnx cache [#4138](https://github.com/apache/pulsar/pull/4138)
+* Removing # TYPE comment from topic metrics in Prometheus [#4136](https://github.com/apache/pulsar/pull/4136)
+* For functions metrics in prometheus also remove TYPE [#4081](https://github.com/apache/pulsar/pull/4091)
+* Fix: set receive queue size for sinks [#4091](https://github.com/apache/pulsar/pull/4091)
+* Fix: Exception when switch cluster from auth enabled to auth disabled [#4069](https://github.com/apache/pulsar/pull/4069)
+* Fix update cli source sink [#4061](https://github.com/apache/pulsar/pull/4061)
+* Fix connectors nested configs [#4067](https://github.com/apache/pulsar/pull/4067)
+* For functions metrics, avoid having HELP [#4029](https://github.com/apache/pulsar/pull/4029)
+* Fix Python functions state which is completely broken [#4027](https://github.com/apache/pulsar/pull/4027)
+* [issue #3975] Bugfix NPE on non durable consumer [#3988](https://github.com/apache/pulsar/pull/3988)
+* Fix: Function auth should ignore exception because it might be anonymous user [#4185](https://github.com/apache/pulsar/pull/4185)
+* [pulsar-function] fix worker-stats broken admin-api [#4068](https://github.com/apache/pulsar/pull/4068)
+* fix errors in sql doc [#4030](https://github.com/apache/pulsar/pull/4030)
+* Fix the swagger files generated by removing troublesome class [#4024](https://github.com/apache/pulsar/pull/4024)
+* [pulsar-function] fix broken backward compatibility with v1-namespace while registering function [#4224](https://github.com/apache/pulsar/pull/4224)
+* Revert dup consumer and related code [#4142](https://github.com/apache/pulsar/pull/4142)
+* [issue 4274][pulsar-io]Add double quotation marks for metrics with remote_cluster [#4295](https://github.com/apache/pulsar/pull/4295)
+
+#### Enhancements
+
+* By default, auto configure the size of Bookie read/write cache [#4297](https://github.com/apache/pulsar/pull/4297)
+* Upgrade to BookKeeper 4.9.2 [#4288](https://github.com/apache/pulsar/pull/4288)
+* [pulsar-function] support bookie authentication from function-worker [#4088](https://github.com/apache/pulsar/pull/4088)
+* Optimizing performance for Pulsar function archive download [#4082](https://github.com/apache/pulsar/pull/4082)
+* allow users to update output topics for functions and sources [#4092](https://github.com/apache/pulsar/pull/4092)
+* improve data-generator source performance [#4058](https://github.com/apache/pulsar/pull/4058)
+* [client] Set actual topic name to partitioned consumer [#4064](https://github.com/apache/pulsar/pull/4064)
+* ack records in datagenerator print sink [#4052](https://github.com/apache/pulsar/pull/4052)
+* [security] Upgrade athenz libraries [#4056](https://github.com/apache/pulsar/pull/4056)
+* [python client] Handle subrecords in JsonSchema encoding [#4023](https://github.com/apache/pulsar/pull/4023)
+* [Issue 3987][pulsar-broker]Handle config is null when create tenant [#4019](https://github.com/apache/pulsar/pull/4019)
+* Add bookkeeper client version constraint [#4013](https://github.com/apache/pulsar/pull/4013)
+* Improve error handling for triggering function when there is a schema mismatch [#3995](https://github.com/apache/pulsar/pull/3995)
+* [pulsar-broker] add producer/consumer id in error-logging [#3961](https://github.com/apache/pulsar/pull/3961)
+
+
+### 2.3.1
+
+#### 2019-04-12
+
+#### Fixes
+
+ * Fixed C++ batch acks tracker to evict message from sendList array. This was causing a slowdown in
+   C++ consumers [#3618](https://github.com/apache/pulsar/pull/3618)
+ * Allow publishing messages >5MB with batching (when they compress to <5MB) [#3673](https://github.com/apache/pulsar/pull/3673) and [#3718](https://github.com/apache/pulsar/pull/3718)
+ * Use at least 8 threads in Jetty thread pool. This fixed deadlocks in Jetty requests handling [#3776](https://github.com/apache/pulsar/pull/3776)
+ * Fixed Reader.HasNext() in Go client [#3764](https://github.com/apache/pulsar/pull/3764)
+ * Fixed increasing consumer permits after ack dedup operation. [#3787](https://github.com/apache/pulsar/pull/3787)
+ * Set the dedup cursor as "inactive" after recovery [#3612](https://github.com/apache/pulsar/pull/3612)
+ * Fix read batching message by pulsar reader [#3830](https://github.com/apache/pulsar/pull/3830)
+ * Fix submit function with code specified via URL [#3934](https://github.com/apache/pulsar/pull/3934)
+ * Fixed reader reading from a partition [#3960](https://github.com/apache/pulsar/pull/3960)
+ * Fixed issue with Authorization header missing after client gets redirected [#3869](https://github.com/apache/pulsar/pull/3869)
+
+#### Enhancements
+ * Added `producer.flush()` on Python [#3685](https://github.com/apache/pulsar/pull/3685)
+ * Introduced schema builder to define schema [#3682](https://github.com/apache/pulsar/pull/3682)
+ * Support passing schema definition for JSON and AVRO schemas [#3766](https://github.com/apache/pulsar/pull/3766)
+ * Exposing InitialPosition setting in Python consumer [#3714](https://github.com/apache/pulsar/pull/3714)
+
+
+ For a complete list of issues fixed, see
+
+ https://github.com/apache/pulsar/milestone/21?closed=1
+
+ https://github.com/apache/pulsar/releases/tag/v2.3.1
+
+
+### 2.3.0
+
+#### 2019-02-20
+
+#### General
+
+ * Support for schema definitions in the Pulsar [Python client library](https://pulsar.apache.org/docs/client-libraries-python/#schema)
+ * PIP-25: [Token based authentication](https://pulsar.apache.org/docs/security-token-client/) [#2888](https://github.com/apache/pulsar/pull/2888),
+   [#3067](https://github.com/apache/pulsar/pull/3067) and [#3089](https://github.com/apache/pulsar/pull/3089)
+ * Updated to [Apache BookKeeper 4.9.0](https://bookkeeper.apache.org/docs/4.9.0/overview/releaseNotes/)
+ * ZStandard compression codec [#3159](https://github.com/apache/pulsar/pull/3159). Note that
+   when a producer choose Zstd compression, a consumer will need to be at least at version 2.3.0
+   to be able to correctly receive the messages.
+ * Support for Java 11 [#3006](https://github.com/apache/pulsar/pull/3006)
+ * Added `Schema.AUTO_PRODUCE` type to allow to publish serialized data and validate it against the
+   topic schema [#2685](https://github.com/apache/pulsar/pull/2685)
+ * Added `Schema.KeyValue` to allow for schema to be validated on message keys as well as payloads. [#2885](https://github.com/apache/pulsar/pull/2885)
+ * Support TLS authentication and authorization in standalone mode [#3360](https://github.com/apache/pulsar/pull/3360)
+ * When creating namespace, use local cluster by default [#3571](https://github.com/apache/pulsar/pull/3571)
+ * Tag BookKeeper ledgers created by Pulsar with topic/subscription names for info/debug purposes
+   [#3525](https://github.com/apache/pulsar/pull/3525)
+ * Enabled sticky reads in BookKeeper reads to increase IO efficiency with read-ahead [#3569](https://github.com/apache/pulsar/pull/3569)
+ * Several optimization in Pulsar SQL Presto connector ([#3128](https://github.com/apache/pulsar/pull/3128),
+    [#3135](https://github.com/apache/pulsar/pull/3135), [#3139](https://github.com/apache/pulsar/pull/3139),
+    [#3144](https://github.com/apache/pulsar/pull/3144), [#3143](https://github.com/apache/pulsar/pull/3143))
+ * Configure Pulsar broker data cache automatically from JVM settings [#3573](https://github.com/apache/pulsar/pull/3573)
+ * Reuse the SSL context objects [#3550](https://github.com/apache/pulsar/pull/3550)
+ * Automatic schema update can be disabled through admin interface [#2691](https://github.com/apache/pulsar/pull/2691)
+ * Support Dead-Letter-Queue from WebSocket proxy [#2968](https://github.com/apache/pulsar/pull/2968)
+ * Pull-mode for WebSocket proxy [#3058](https://github.com/apache/pulsar/pull/3058)
+ * Export Jetty stats to Prometheus [#2804](https://github.com/apache/pulsar/pull/2804)
+ * Added stats for Pulsar proxy [#2740](https://github.com/apache/pulsar/pull/2740)
+ * Allow subscribers to access subscription admin-api [#2981](https://github.com/apache/pulsar/pull/2981)
+ * Make brokers read on closest Bookie in a multi-region deployment [#3171](https://github.com/apache/pulsar/pull/3171)
+
+#### Fixes
+ * Fixed deadlock in reusing ZooKeeper event thread [#3591](https://github.com/apache/pulsar/pull/3591)
+ * In functions log topic appender, don't set producer name [#3544](https://github.com/apache/pulsar/pull/3544)
+ * When cursor recovery encounters empty cursor ledger, fallback to latest snapshot [#3487](https://github.com/apache/pulsar/pull/3487)
+ * Fixed C++ regex-consumer when using HTTP service URL [#3407](https://github.com/apache/pulsar/pull/3407)
+ * Fix race condition: broker not scheduling read for active consumer [#3411](https://github.com/apache/pulsar/pull/3411)
+
+#### Pulsar IO
+ * Added Debezium connector for Change-Data-Capture into Pulsar [#2791](https://github.com/apache/pulsar/pull/2791)
+ * Added MongoDB connector [#3561](https://github.com/apache/pulsar/pull/3561)
+ * Added Elastic Search connector [#2546](https://github.com/apache/pulsar/pull/2546)
+ * Added HBase sink [#3368](https://github.com/apache/pulsar/pull/3368)
+ * Added Local files connector [#2869](https://github.com/apache/pulsar/pull/2869)
+ * Report source/sink stats in Prometheus [#3261](https://github.com/apache/pulsar/pull/3261)
+ * Allow filtering in Twitter Firehose connector [#3298](https://github.com/apache/pulsar/pull/3298)
+ * Sources/Sinks can be launched using fat jars as well [#3166](https://github.com/apache/pulsar/pull/3166)
+
+#### Pulsar Functions
+ * Added Kubernetes runtime [#1950](https://github.com/apache/pulsar/pull/1950)
+ * Secrets interface [#2826](https://github.com/apache/pulsar/pull/2826)
+ * Cleanup subscriptions when deleting functions [#3299](https://github.com/apache/pulsar/pull/3299)
+ * Add Windowfunction interface to functions api [#3324](https://github.com/apache/pulsar/pull/3324)
+ * Support for accessing state in Python [#2714](https://github.com/apache/pulsar/pull/2714)
+ * Support submitting Python functions as wheel file
+ * Support submitting Python functions as Zip file with dependencies included [#3321](https://github.com/apache/pulsar/pull/3321)
+ * Add minimum amount of resources to run setting for functions [#3536](https://github.com/apache/pulsar/pull/3536)
+ * Fixed the behavior of Function start/stop [#3477](https://github.com/apache/pulsar/pull/3477)
+
+#### Java client
+ * Moved Pulsar v1 client API into separate artifact [#3228](https://github.com/apache/pulsar/pull/3228).<br />
+   Applications that are using the Pulsar v1 API, deprecated since 2.0 release, need to update the
+   Maven dependency to use the `pulsar-client-1x` artifact instead of `pulsar-client`. Eg.
+   ```xml
+   <dependency>
+       <groupId>org.apache.pulsar</groupId>
+       <artifactId>pulsar-client-1x</artifactId>
+       <version>2.3.0</version>
+   </dependency>
+   ```
+ * Fixed shading issues with Javadoc bundled in client jars by separating the API in a different
+   Maven module [#3309](https://github.com/apache/pulsar/pull/3309)
+ * Improve Javadocs [#3592](https://github.com/apache/pulsar/pull/3592)
+ * Support specifying multiple hosts in pulsar service url and web url [#3249](https://github.com/apache/pulsar/pull/3249)  
+ * Automatically discover when partitions on a topic are increased [#3513](https://github.com/apache/pulsar/pull/3513)
+ * Added `Client.getPartitionsForTopic()` [#2972](https://github.com/apache/pulsar/pull/2972)
+   ([Javadoc](https://pulsar.apache.org/api/client/org/apache/pulsar/client/api/PulsarClient.html#getPartitionsForTopic-java.lang.String-))
+ * Added `Consumer.pauseMessageListener()` and `Consumer.resumeMessageListener()` [#2961](https://github.com/apache/pulsar/pull/2961)
+ * Removed shading relocations for Circe-checksum and lz4 libraries, to ensure native libraries
+   are correctly loaded when using shaded client lib. [#2191](https://github.com/apache/pulsar/pull/2191)
+
+#### Python client
+ * Fixed `Message.properties()` [#3595](https://github.com/apache/pulsar/pull/3595)
+
+#### Go client
+ * Added `Producer.flush()` to flush all outstanding messages [#3469](https://github.com/apache/pulsar/pull/3469)
+ * Support `Consumer.Seek()` [#3478](https://github.com/apache/pulsar/pull/3478)
+ * Added `Message.Topic()` [#3346](https://github.com/apache/pulsar/pull/3346)
+ * Allow to specify `SubscriptionInitPos` option in `ConsumerOptions` [#3588](https://github.com/apache/pulsar/pull/3588)
+ * Added TLS hostname verification [#3580](https://github.com/apache/pulsar/pull/3580)
+ * Allow to link statically against `libpulsar.a`[#3488](https://github.com/apache/pulsar/pull/3488)
+ * Expose `Producer.LastSequenceID()` and `Message.SequenceID()` [#3416](https://github.com/apache/pulsar/pull/3416)
+
+#### C++ client
+ * Enable batching by default when using `sendAsync()` [#2949](https://github.com/apache/pulsar/pull/2949)
+ * Allow to specify schema info in Avro format [#3354](https://github.com/apache/pulsar/pull/3354)
+ * Added `Producer.flush()` to flush all outstanding messages [#3020](https://github.com/apache/pulsar/pull/3020)
+ * Added TLS hostname verification [#2475](https://github.com/apache/pulsar/pull/2475)
+ * Allow to specify `SubscriptionInitialPosition` [#3567](https://github.com/apache/pulsar/pull/3567)
+ * Added `Message.getTopicName()` [#3326](https://github.com/apache/pulsar/pull/3326)
+ * Added `Cosnsumer.receiveAsync()` [#3389](https://github.com/apache/pulsar/pull/3389)
+ * Build `libpulsar.a` with all required dependencies [#3488](https://github.com/apache/pulsar/pull/3488)
+ * Removed Boost from Pulsar API headers [#3374](https://github.com/apache/pulsar/pull/3374)
+
+#### Adaptors
+
+ * Kafka client wrapper, added support for explicit partitioning and custom partitioner [#3462](https://github.com/apache/pulsar/pull/3462)
+ * Support config `auto.offset.reset` to Pulsar KafkaConsumer [#3273](https://github.com/apache/pulsar/pull/3273)
+ * In Apache Flink connector, added support for Batch Sink API ([2979#](https://github.com/apache/pulsar/pull/2979),
+   [#3039](https://github.com/apache/pulsar/pull/3039) and [#3046](https://github.com/apache/pulsar/pull/3046))
+ * Added [Java batch examples](https://github.com/apache/pulsar/tree/master/examples/flink/src/main/java/org/apache/flink/batch/connectors/pulsar/example) for Flink adaptor
+ * Added [Java streaming examples](https://github.com/apache/pulsar/tree/master/examples/flink/src/main/java/org/apache/flink/streaming/connectors/pulsar/example) for Flink adaptor
+ * Added [Scala examples](https://github.com/apache/pulsar/tree/master/examples/flink/src/main/scala/org/apache/flink/batch/connectors/pulsar/example) for Flink adaptor
+
+For a complete list of issues fixed, see
+
+https://github.com/apache/pulsar/milestone/18?closed=1
+
+https://github.com/apache/pulsar/releases/tag/v2.3.0
+
+
+
+### 2.2.1
+
+#### 2018-12-31
+
+This release includes fixes for 2.2.0 release. In particular:
+
+* Fixed issue when proxy HTTP admin API requests Pulsar proxy [#3022](https://github.com/apache/pulsar/pull/3022)
+
+* Fixed `Consumer.unsubscribe()` in Python client library [#3093](https://github.com/apache/pulsar/pull/3093)
+
+* Fixed ZLib decompression in C++ client [#2854](https://github.com/apache/pulsar/pull/2854)
+
+* Fixed Pulsar functions context publish in Python [#2844](https://github.com/apache/pulsar/pull/2844)
+
+For a complete list of issues fixed, see
+
+https://github.com/apache/pulsar/milestone/19?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v2.2.1
+
+
+### 2.2.0
+
+#### 2018-10-24
+
+This is the first release of Pulsar as an Apache Top Level Project
+
+This is a feature release, including several new features, improvements and fixes for  issues reported for 2.1.1-incubating.
+ 
+* [Pulsar Java Client Interceptors](https://github.com/apache/pulsar/pull/2471)
+
+* [Integration of functions and io with schema registry](https://github.com/apache/pulsar/pull/2266)
+
+* [Dead Letter Topic](https://github.com/apache/pulsar/wiki/PIP-22%3A-Pulsar-Dead-Letter-Topic)
+
+* [Flink Source connector](https://github.com/apache/pulsar/pull/2555)
+
+* [JDBC Sink Connector](https://github.com/apache/pulsar/issues/2313)
+
+* [HDFS Sink Connector](https://github.com/apache/pulsar/pull/2409)
+
+* [Google Cloud Storage Offloader](https://github.com/apache/pulsar/issues/2067)
+
+* [Pulsar SQL](https://github.com/apache/pulsar/wiki/PIP-19:-Pulsar-SQL)
+
+
+For a complete list of issues fixed, see
+
+https://github.com/apache/pulsar/milestone/16?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v2.2.0
+
+
+
+
+
+
+
+## Apache incubator
+
+### 2.1.1-incubating
+
+#### 2018-09-17
+
+This release fixes issues reported for 2.1.0-incubating.
+
+ * [#2473](https://github.com/apache/incubator-pulsar/pull/2473) - Downgrading ZK to stable version 3.4.13
+ * [#2219](https://github.com/apache/incubator-pulsar/pull/2219) - Cpp client: add PatternMultiTopicsConsumerImpl to support regex subscribe
+ * [#2387](https://github.com/apache/incubator-pulsar/pull/2387) - Fixed race condition during expansion of concurrent open hash maps
+ * [#2348](https://github.com/apache/incubator-pulsar/pull/2348) - Fix NPE when splitting and unloading bundle
+ * [#2223](https://github.com/apache/incubator-pulsar/pull/2223) - fix bug in FunctionRuntimeManager involving not cleaning up old invalid assignments
+ * [#2367](https://github.com/apache/incubator-pulsar/pull/2367) - [compaction] make topic compaction works with partitioned topic
+ * [#2203](https://github.com/apache/incubator-pulsar/pull/2203) - Make sure schema is initialized before the topic is loaded
+
+The complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/17?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v2.1.1-incubating
+
+### 2.1.0-incubating
+
+#### 2018-08-02
+
+This is the seventh release of Apache Pulsar since entering the ASF incubator.
+
+It is a feature release, including several new features and major improvements:
+
+- [Pulsar IO](/docs/en/io-overview/): A connector framework for moving data in and out of Apache Pulsar leveraging [Pulsar Functions](/docs/en/functions-overview/) runtime.
+- A list of [Builtin Connectors](/docs/en/io-connectors):
+  - [Aerospike Connector](/docs/en/io-aerospike/)
+  - [Cassandra Connector](/docs/en/io-cassandra/)
+  - [Kafka Connector](/docs/en/io-kafka/)
+  - [Kinesis Connector](/docs/en/io-kinesis/)
+  - [RabbitMQ Connector](/docs/en/io-rabbitmq/)
+  - [Twitter Firehose Connector](/docs/en/io-twitter/)
+- [Tiered Storage](/docs/en/concepts-tiered-storage/): An extension in Pulsar segment store to offload older segments into long term storage (e.g. HDFS, S3).
+  S3 support is supported in 2.1 release.
+- [Stateful function](/docs/en/functions-state/): Pulsar Functions is able to use [State API](/docs/en/functions-state#api) for storing state within Pulsar.
+- Pulsar [Go Client](/docs/en/client-libraries-go/)
+- [Avro](https://github.com/apache/incubator-pulsar/blob/v2.1.0-incubating/pulsar-client-schema/src/main/java/org/apache/pulsar/client/impl/schema/AvroSchema.java) and
+  [Protobuf](https://github.com/apache/incubator-pulsar/blob/v2.1.0-incubating/pulsar-client-schema/src/main/java/org/apache/pulsar/client/impl/schema/ProtobufSchema.java) Schema support
+
+The complete list of changes can be found at: https://github.com/apache/incubator-pulsar/milestone/13?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v2.1.0-incubating
+
+### 2.0.1-incubating
+
+#### 2018-06-18
+
+This release fixes issues reported for 2.0.0-rc1-incubating.
+
+ * [#1893](https://github.com/apache/incubator-pulsar/pull/1893) - Fixed issues with Python packages on PyPI
+ * [#1797](https://github.com/apache/incubator-pulsar/issues/1797) - Proxy doesn't strip the request
+    URL for admin requests correctly
+ * [#1862](https://github.com/apache/incubator-pulsar/pull/1862) - Fix REST APIs provided by Pulsar proxy
+
+The complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/14?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v2.0.1-incubating
+
+### 1.22.1-incubating
+
+#### 2018-06-18
+
+This is the sixth release of Apache Pulsar since entering the ASF incubator.
+
+This release addresses issues reported in 1.22.0-incubating version.
+
+ * [#1660](https://github.com/apache/incubator-pulsar/pull/1660) Deadlock while closing non persistent topic
+ * [#1591](https://github.com/apache/incubator-pulsar/pull/1591) Deadlock while closing non shared consumer
+ * [#1554](https://github.com/apache/incubator-pulsar/pull/1554) Handle invalid mark delete position at managed cursor
+ * [#1262](https://github.com/apache/incubator-pulsar/pull/1262) Broker should not start replicator for root partitioned topic
+ * [#1662](https://github.com/apache/incubator-pulsar/pull/1662) NPE when cursor failed to close empty subscription
+ * [#1370](https://github.com/apache/incubator-pulsar/pull/1370) Relocate service files for shading pulsar-client-admin module
+ * [#1265](https://github.com/apache/incubator-pulsar/pull/1265) Fixed lookup redirect logic on Proxyside
+ * [#1428](https://github.com/apache/incubator-pulsar/pull/1428) Handle Race condition in concurrent bundle split
+ * [#1817](https://github.com/apache/incubator-pulsar/pull/1817) Fixed mem leak when acknowledging while disconnected from broke
+ * [#1851](https://github.com/apache/incubator-pulsar/pull/1851) Fixing resource leak due to open file descriptors in SecurityUtility.
+
+The complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/15?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.22.1-incubating
+
+### 2.0.0-rc1-incubating
+
+#### 2018-05-29
+
+This is the fifth release of Apache Pulsar since entering the ASF incubator and the
+first time we increase major release number.
+
+There are several new features and major improvements:
+
+ * [Pulsar functions](http://pulsar.apache.org/docs/latest/functions/overview/): Lightweight
+   compute framework
+ * New type-safe [Java API](http://pulsar.apache.org/docs/latest/clients/Java/) for producer/consumers
+ * [Schema registry](http://pulsar.apache.org/docs/v2.0.0-rc1-incubating/getting-started/ConceptsAndArchitecture/#Schemaregistry-ll008b) &mdash; Enforce schema on topics
+ * Topic compaction &mdash; Out of band compaction of messages to allow consumer to fetch a
+   snapshot with last published message for each message key.
+ * Upgraded to [Apache BookKeeper](https://bookkeeper.apache.org/) 4.7.0
+ * Performance improvements &mdash; Up to 3x throughput improvements compared to Pulsar-1.22 and
+   99.9 Pct publish latencies <10ms
+ * [Simplified terminology](http://pulsar.apache.org/docs/v2.0.0-rc1-incubating/getting-started/Pulsar-2.0/#Propertiesversustenants-gh1amh) and admin tools
+   - Renamed "property" into "tenants"
+   - Short topic names: `my-topic`
+   - Topics independent of cluster names: `my-tenant/my-namespace/my-topic`
+
+The complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/12?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v2.0.0-rc1-incubating
+
+
+### 1.22.0-incubating
+
+#### 2018-03-06
+
+This is the fourth of Apache Pulsar since entering the ASF incubator.
+
+Major changes in this release include:
+
+#### Features
+ * [#896](https://github.com/apache/incubator-pulsar/pull/896) PIP-7 Introduce Failure-domain and Anti-affinity-namespace group
+ * [#1031](https://github.com/apache/incubator-pulsar/pull/1031) Add optional key/value metadata to producers/consumers
+ * [#1129](https://github.com/apache/incubator-pulsar/pull/1129) Added end to end encryption in C++ client
+ * [#1151](https://github.com/apache/incubator-pulsar/pull/1151) Added REST handler to create a subscription on a topic
+ * [#1087](https://github.com/apache/incubator-pulsar/pull/1087) Add basic authentication plugin
+ * [#1200](https://github.com/apache/incubator-pulsar/pull/1200) Add pluggable authorization mechanism
+ * [#1208](https://github.com/apache/incubator-pulsar/pull/1208) Add hostname-verification at client tls connection
+ * [#950](https://github.com/apache/incubator-pulsar/pull/950) Provided an DCOS Universe package for pulsar
+ * [#1046](https://github.com/apache/incubator-pulsar/pull/1046) Introduce config to skip non-recoverable data-ledger
+ * [#899](https://github.com/apache/incubator-pulsar/pull/899) Add subscription auth mode by prefix
+ * [#1135](https://github.com/apache/incubator-pulsar/pull/1135) Added infinite time retention configuration option
+
+#### Enhancements
+
+ * [#1094](https://github.com/apache/incubator-pulsar/pull/1094) Include BoringSSL native implementation for faster TLS
+ * [#1204](https://github.com/apache/incubator-pulsar/pull/1204) Reduce size of buffer used to assemble batches
+ * [#930](https://github.com/apache/incubator-pulsar/pull/930) Perform async DNS resolution
+ * [#1124](https://github.com/apache/incubator-pulsar/pull/1124) Support Pulsar proxy from C++/Python client library
+ * [#1012](https://github.com/apache/incubator-pulsar/pull/1012) Made load shedding for load manager Dynamically configurable
+ * [#962](https://github.com/apache/incubator-pulsar/pull/962) Raw Reader for Pulsar Topics
+ * [#941](https://github.com/apache/incubator-pulsar/pull/941) Upgraded Jackson version
+ * [#1002](https://github.com/apache/incubator-pulsar/pull/1002), [#1169](https://github.com/apache/incubator-pulsar/pull/1169), [#1168](https://github.com/apache/incubator-pulsar/pull/1168) Making Pulsar Proxy more secure
+ * [#1029](https://github.com/apache/incubator-pulsar/pull/1029) Fix MessageRouter hash inconsistent on C++/Java client
+
+#### Fixes
+
+ * [#1153](https://github.com/apache/incubator-pulsar/pull/1153) Fixed increase partitions on a partitioned topic
+ * [#1195](https://github.com/apache/incubator-pulsar/pull/1195) Ensure the checksum is not stripped after validation in the broker
+ * [#1203](https://github.com/apache/incubator-pulsar/pull/1203) Use duplicates when writing from ByteBuf pair to avoid multiple threads issues
+ * [#1210](https://github.com/apache/incubator-pulsar/pull/1210) Cancel keep-alive timer task after the proxy switch to TCP proxy
+ * [#1170](https://github.com/apache/incubator-pulsar/pull/1170) Upgrade BK version: BK-4.3.1.91-yahoo (fix: stats + DoubleByteBuf)
+ * [#875](https://github.com/apache/incubator-pulsar/pull/875) Bug fixes for Websocket proxy
+
+The complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/11?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.22.0-incubating
+
+### 1.21.0-incubating
+
+#### 2017-12-17
+
+This is the third of Apache Pulsar since entering the ASF incubator.
+
+Major changes in this release include:
+
+ * [#689](https://github.com/apache/incubator-pulsar/pull/689) Upgrade to Netty 4.1
+ * [#846](https://github.com/apache/incubator-pulsar/pull/846) Publish the shaded pulsar-client as the default dependency
+ * [#832](https://github.com/apache/incubator-pulsar/pull/832) [#833](https://github.com/apache/incubator-pulsar/pull/833) [#849](https://github.com/apache/incubator-pulsar/pull/849) [#852](https://github.com/apache/incubator-pulsar/pull/852) Enhancements to Kafka API wrapper to have it work with Kafka's own benchmark tools
+ * [#836](https://github.com/apache/incubator-pulsar/pull/836) Fix to C++ partitioned consumer client
+ * [#822](https://github.com/apache/incubator-pulsar/pull/822) [#826](https://github.com/apache/incubator-pulsar/pull/826) Several fixes and improvements related to the namespace bundles
+ * [#848](https://github.com/apache/incubator-pulsar/pull/848) Allow consumer to seek to message id from within Pulsar client
+ * [#903](https://github.com/apache/incubator-pulsar/pull/903) PIP-8: Scale Pulsar beyond 1M topics
+ * [#824](https://github.com/apache/incubator-pulsar/pull/824) Enable secure replication over TLS
+ * [#923](https://github.com/apache/incubator-pulsar/pull/923) Upgrade to bk-4.3.1.83-yahoo to expose journalSyncData option
+ * [#807](https://github.com/apache/incubator-pulsar/pull/807) Prevent message duplication when active consumer is changed
+
+Complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/10?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.21.0-incubating
+
+### 1.20.0-incubating
+
+#### 2017-08-08
+
+This is the second of Apache Pulsar since entering the ASF incubator.
+
+Major changes in this release include:
+
+ * [#620](https://github.com/apache/incubator-pulsar/pull/620) [#717](https://github.com/apache/incubator-pulsar/pull/717) [#718](https://github.com/apache/incubator-pulsar/pull/718) Reader API support for C++, Python & Websocket Proxy
+ * [#634](https://github.com/apache/incubator-pulsar/pull/634) Added [Message dispatch throttling](https://github.com/apache/incubator-pulsar/wiki/PIP-3:-Message-dispatch-throttling)
+ * [#731](https://github.com/apache/incubator-pulsar/pull/731) Added [End to End Encryption](https://github.com/apache/incubator-pulsar/wiki/PIP-4:-Pulsar-End-to-End-Encryption)
+ * [#732](https://github.com/apache/incubator-pulsar/pull/732) Support for [Event Time](https://github.com/apache/incubator-pulsar/wiki/PIP-5:-Event-time) for messages
+ * [#751](https://github.com/apache/incubator-pulsar/pull/751) Guaranteed [Deduplication of Messages](https://github.com/apache/incubator-pulsar/wiki/PIP-6:-Guaranteed-Message-Deduplication)
+ * [#761](https://github.com/apache/incubator-pulsar/pull/761) Kafka API wrapper for Pulsar client library
+
+Complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/9?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.20.0-incubating
+
+### 1.19.0-incubating
+
+#### 2017-08-08
+
+This is the first of Apache Pulsar since entering the ASF incubator.
+
+Major changes included in this release are:
+
+ * [#524](https://github.com/apache/incubator-pulsar/pull/524) Moved APIs from `com.yahoo.pulsar` to `org.apache.pulsar`
+ * [#548](https://github.com/apache/incubator-pulsar/pull/548) Added stateless [Pulsar proxy](https://github.com/apache/incubator-pulsar/wiki/PIP-1:-Pulsar-Proxy)
+ * [#538](https://github.com/apache/incubator-pulsar/pull/538) Support for [non-persistent topics](https://github.com/apache/incubator-pulsar/wiki/PIP-2:-Non-Persistent-topic)
+ * [#587](https://github.com/apache/incubator-pulsar/pull/587) Upgraded RocksDB to comply with ASF policy
+ * [#507](https://github.com/apache/incubator-pulsar/pull/507) Instrumentation of ZooKeeper client to expose metrics
+ * Various fixes for TLS auth in WebSocket proxy
+
+Complete list of changes can be found at:
+https://github.com/apache/incubator-pulsar/milestone/8?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.19.0-incubating
+
+## Pre-Apache
+
+### 1.18
+
+#### 2017-06-17
+
+Main changes:
+ * [#325](https://github.com/apache/incubator-pulsar/pull/325) Add Modular load manager documentation
+ * [#329](https://github.com/apache/incubator-pulsar/pull/329) Add api to get list of partitioned topics
+ * [#296](https://github.com/apache/incubator-pulsar/pull/296) Added spark streaming custom receiver for pulsar
+ * [#317](https://github.com/apache/incubator-pulsar/pull/317) HTTP lookups for c++ client lib
+ * [#332](https://github.com/apache/incubator-pulsar/pull/332) Fix: Modular load manager bug fixes
+ * [#352](https://github.com/apache/incubator-pulsar/pull/352) Fix: Delete local-policies and invalidate cache when namespace is dele
+ * [#356](https://github.com/apache/incubator-pulsar/pull/356) Fix: WebSocket TLS connection bug
+ * [#363](https://github.com/apache/incubator-pulsar/pull/363) Use binary protocol lookup for connection between WebSocket proxy and broker
+ * [#375](https://github.com/apache/incubator-pulsar/pull/375) Fix: Bug fixes on deadlock while topic loading failure
+ * [#376](https://github.com/apache/incubator-pulsar/pull/376) Fix: Avoid incrementing unack-msg count for non-shared sub and not show it on stats
+ * [#329](https://github.com/apache/incubator-pulsar/pull/329) Fix: Handle zkCache failures
+ * [#387](https://github.com/apache/incubator-pulsar/pull/387) Pass client library version to broker and show on stats
+ * [#345](https://github.com/apache/incubator-pulsar/pull/345) Add load shedding strategy
+ * [#393](https://github.com/apache/incubator-pulsar/pull/393) Change default mark-delete rate limit from 10s to 1s
+ * [#392](https://github.com/apache/incubator-pulsar/pull/392) Upgrade to netty-4.0.46
+ * [#366](https://github.com/apache/incubator-pulsar/pull/366) NonDurable cursor for managed ledger
+ * [#371](https://github.com/apache/incubator-pulsar/pull/371) Introduce topic reader in client API
+ * [#341](https://github.com/apache/incubator-pulsar/pull/341) Add stats and monitoring for websocket proxy
+ * [#299](https://github.com/apache/incubator-pulsar/pull/299) Add api to increase partitions of existing non-global partitioned-topic
+ * [#294](https://github.com/apache/incubator-pulsar/pull/294) Add endpoint to fetch stats for Prometheus
+ * [#440](https://github.com/apache/incubator-pulsar/pull/440) Enable PulsarAdmin to trust multiple certificates
+ * [#442](https://github.com/apache/incubator-pulsar/pull/442) Fix: Remove broker weights for ModularLoadManager
+ * [#446](https://github.com/apache/incubator-pulsar/pull/446) Fix: Recover cursor with correct readPosition and replay unackedMessages
+ * [#441](https://github.com/apache/incubator-pulsar/pull/441) Set Block If queue full to false by default
+ * [#447](https://github.com/apache/incubator-pulsar/pull/447) Fix: DoubleByteBuf to send large size messages in TLS mode
+ * [#443](https://github.com/apache/incubator-pulsar/pull/443) Add topic termination option
+ * [#436](https://github.com/apache/incubator-pulsar/pull/436) Added ZooKeeper instrumentation for enhanced stats
+ * [#448](https://github.com/apache/incubator-pulsar/pull/448) WebSocket proxy should not make a consumer/producer when authorization is failed
+ * [#443](https://github.com/apache/incubator-pulsar/pull/443) Add Docker images definition and instruction to deploy on Kubernetes
+ * [#474](https://github.com/apache/incubator-pulsar/pull/474) Fix: message rate out with batches to count messages/s
+ * [#482](https://github.com/apache/incubator-pulsar/pull/482) Allow client(producer/consumer) to check topic stats
+ * [#468](https://github.com/apache/incubator-pulsar/pull/468) Pulsar Python client library
+ * [#386](https://github.com/apache/incubator-pulsar/pull/386) Increment bookkeeper version to 4.3.1.69-yahoo
+
+Full list of changes: https://github.com/yahoo/pulsar/milestone/7?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.18
+
+### 1.17.5
+
+#### 2017-05-02
+
+ * [#343](https://github.com/apache/incubator-pulsar/pull/343) Fix ModularLoadManager to select broker from current available-broker list
+ * [#384](https://github.com/apache/incubator-pulsar/pull/384) Fix Send replay entries read callback from background thread, to avoid recursive stack calls
+ * [#390](https://github.com/apache/incubator-pulsar/pull/390) Fix Shaded AsyncHttpClient in pulsar client
+ * [#374](https://github.com/apache/incubator-pulsar/pull/374) Fix Remove Exceptionally Completed Topic Futures
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.17.5
+
+### 1.17.4
+
+#### 2017-04-25
+
+ * [#362](https://github.com/apache/incubator-pulsar/pull/362) Fix add timeout on blocking ZookeeperCache get call
+ * [#375](https://github.com/apache/incubator-pulsar/pull/375) Fix possible deal lock on topic loading if broker fails to get MLConfiguration from zk
+ * [#377](https://github.com/apache/incubator-pulsar/pull/377) Fix zkCache error handling and zk-callback processing on separate dedicated thread
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.17.4
+
+### 1.17.3
+
+#### 2017-04-20
+
+ * [#367](https://github.com/apache/incubator-pulsar/pull/367) Fix dispatcher correctly finds available consumer from list of shared-subscription consumers
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.17.3
+
+### 1.17.2
+
+#### 2017-04-06
+
+ * [#327](https://github.com/apache/incubator-pulsar/pull/327) Create znode for dynamic configuration if not present
+ * [#336](https://github.com/apache/incubator-pulsar/pull/336) Fix prevent creation of topic when bundle is disable
+ * [#338](https://github.com/apache/incubator-pulsar/pull/338) Fix deserialize load report based on load-manager
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.17.2
+
+### 1.17.1
+
+#### 2017-03-30
+
+ * [#326](https://github.com/apache/incubator-pulsar/pull/326) Fix memory leak while duplicating entry data from existing entry
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.17.1
+
+### 1.17
+
+#### 2017-03-30
+
+Main changes:
+
+ * [#188](https://github.com/apache/incubator-pulsar/pull/188) Pulsar Dashboard
+ * [#276](https://github.com/apache/incubator-pulsar/pull/276) Broker persist individually deleted messages
+ * [#282](https://github.com/apache/incubator-pulsar/pull/282) Support binary format to persist managed-ledger info in ZK
+ * [#292](https://github.com/apache/incubator-pulsar/pull/292) Added REST and CLI tool to expose ManagedLedger metadata
+ * [#285](https://github.com/apache/incubator-pulsar/pull/285) Add documentation in japanese
+ * [#178](https://github.com/apache/incubator-pulsar/pull/178) Add Athenz authentication plugin
+ * [#186](https://github.com/apache/incubator-pulsar/pull/186) Update Broker service configuration dynamically
+ * [#215](https://github.com/apache/incubator-pulsar/pull/215) Fix Broker disconnects unsupported batch-consumer on batch-message topic
+ * [#165](https://github.com/apache/incubator-pulsar/pull/165) Message dispatching on consumer priority-level
+ * [#303](https://github.com/apache/incubator-pulsar/pull/303) Introduce new load manager implementation
+ * [#306](https://github.com/apache/incubator-pulsar/pull/306) Add topic loading throttling at broker
+ * [#302](https://github.com/apache/incubator-pulsar/pull/302) Update BK version to 4.3.1.60-yahoo to include: 64bit ledger-ids, fix: memory leak on read-only bookie and datasketches concurrency issue
+ * [#216](https://github.com/apache/incubator-pulsar/pull/216) Binary proto api to get consumer stats
+ * [#225](https://github.com/apache/incubator-pulsar/pull/225) Server lookup throttling
+ * [#182](https://github.com/apache/incubator-pulsar/pull/182) Client lookup request throttling and server-error handling
+ * [#265](https://github.com/apache/incubator-pulsar/pull/265) Fix client handling on http server error
+ * [#204](https://github.com/apache/incubator-pulsar/pull/204) Fix discovery service redirection
+ * [#311](https://github.com/apache/incubator-pulsar/pull/311) Fix netty package conflict at binary distribution
+ * [#221](https://github.com/apache/incubator-pulsar/pull/221) Fixed race condition on client reconnection logic
+ * [#239](https://github.com/apache/incubator-pulsar/pull/239) Fix replicator handling on closed cursor
+ * [#318](https://github.com/apache/incubator-pulsar/pull/318) GC improvements: Recyclable entry and reduce collection on stats generation
+
+Full list of changes: https://github.com/apache/incubator-pulsar/milestone/3?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.17
+
+### 1.16.5
+
+#### 2017-03-10
+
+ * [#311](https://github.com/apache/incubator-pulsar/pull/311) Exclude netty individual jars from binary distribution. This issue was causing binary distribution to have conflicting netty dependencies.
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.16.5
+
+### 1.16.4
+
+#### 2017-03-10
+
+ * [#265](https://github.com/apache/incubator-pulsar/pull/265) Fix client closes http-connection on internal-server error
+ * [#283](https://github.com/apache/incubator-pulsar/pull/283) Fix recycle keep alive command-object properly
+ * [#284](https://github.com/apache/incubator-pulsar/pull/284) Reduce usage of collections in managed-ledger metrics-generation to reduce GC impact
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.16.4
+
+### 1.16.3
+
+#### 2017-03-01
+
+ * [#275](https://github.com/apache/incubator-pulsar/pull/275) Fix for Infinite loop in PersistentReplicator.startProducer()
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.16.3
+
+### 1.16.2
+
+#### 2017-02-24
+
+ * [#250](https://github.com/apache/incubator-pulsar/pull/250) : Disconnect consumers without closing dispatcher on cursor-reset
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.16.2
+
+### 1.16.1
+
+#### 2017-02-24
+
+ * [#221](https://github.com/apache/incubator-pulsar/pull/221) Fixed race condition while creating client connection
+ * [#223](https://github.com/apache/incubator-pulsar/pull/223) Fixed broker's direct memory usage count
+ * [#220](https://github.com/apache/incubator-pulsar/pull/220) Fixed stuck replicator producer on backlog quota exception
+ * [#239](https://github.com/apache/incubator-pulsar/pull/239) Fixed replicator stop reading on already closed cursor
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.16.1
+
+### 1.16
+
+#### 2017-02-02
+
+Main changes:
+ * [#76](https://github.com/apache/incubator-pulsar/pull/76) Async Zookeeper cache implementation
+ * [#105](https://github.com/apache/incubator-pulsar/pull/105) Support topic lookup using pulsar binary protocol
+ * [#164](https://github.com/apache/incubator-pulsar/pull/164) Fixed handling failure of unloading namespace bundle
+ * [#166](https://github.com/apache/incubator-pulsar/pull/166) Support websocket proxy deployment without passing globalZK
+ * [#161](https://github.com/apache/incubator-pulsar/pull/161) Fixed avoiding creation of duplicate replicator
+ * [#160](https://github.com/apache/incubator-pulsar/pull/160) Add support uri encoding on broker admin rest api
+ * [#143](https://github.com/apache/incubator-pulsar/pull/143) Include DataSketches metrics provider for bookie stats
+ * [#127](https://github.com/apache/incubator-pulsar/pull/127) Updated BK-4.3.1.45/47-yahoo to include bookie/bookkeeper-client bug-fixes and DataSketch metrics provider
+ * [#124](https://github.com/apache/incubator-pulsar/pull/124) Consumer-stats: Add blockedConsumer flag
+ * [#95](https://github.com/apache/incubator-pulsar/pull/95) Consumer-stats: Add message redelivery rate
+ * [#123](https://github.com/apache/incubator-pulsar/pull/123) Fixed Batch message replication
+ * [#106](https://github.com/apache/incubator-pulsar/pull/106) Fixed Partitioned consumer should avoid blocking call to fill shared queue
+ * [#139](https://github.com/apache/incubator-pulsar/pull/139) Support online consumer cursor reset
+ * [#187](https://github.com/apache/incubator-pulsar/pull/187) Support custom advertised address in pulsar standalone
+
+Full list of changes: https://github.com/yahoo/pulsar/milestone/2?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.16
+
+### 1.15.7
+
+#### 2017-01-25
+
+ * [#174](https://github.com/apache/incubator-pulsar/pull/174) Handling bundle unloading failure
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.7
+
+### 1.15.6
+
+#### 2017-01-20
+
+ * [#171](https://github.com/apache/incubator-pulsar/pull/171) Fix: Consumer redelivery should not wipeout availablePermits
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.6
+
+### 1.15.5
+
+#### 2017-01-03
+
+ * [#159](https://github.com/apache/incubator-pulsar/pull/159) Fix: Replicator-cleanup while closing replicator at broker.
+ * [#160](https://github.com/apache/incubator-pulsar/pull/160) Fix: Http lookup for topic with special character
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.5
+
+### 1.15.4
+
+#### 2016-12-14
+
+ * [#146](https://github.com/apache/incubator-pulsar/pull/146) Fix: Partitioned consumer can consume messages with receiverQueueSize 1.
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.4
+
+### 1.15.3
+
+#### 2016-12-13
+
+ * [#145](https://github.com/apache/incubator-pulsar/pull/145) Fixed issue Partitioned-consumer aggregate messages without blocking internal listener thread
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.3
+
+### 1.15.2
+
+#### 2016-11-03
+
+ * [#102](https://github.com/apache/incubator-pulsar/pull/102) Fixed issue with message dispatching while message-replay at broker
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.2
+
+### 1.15.1
+
+#### 2016-10-27
+
+ * [#89](https://github.com/apache/incubator-pulsar/pull/89) Fixed issue with replication in a mixed
+   environment with 1.14 and 1.15 brokers
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15.1
+
+### 1.15
+
+#### 2016-10-18
+
+- [#39](https://github.com/apache/incubator-pulsar/pull/39) Updated BookKeeper version to 4.3.1.41-yahoo to include bookie storage improvements
+- [#17](https://github.com/apache/incubator-pulsar/pull/17) Fixed memory leak in stats generation buffer rollover
+- [#27](https://github.com/apache/incubator-pulsar/pull/27) Fixed issues with discovery service component when HTTPS is enabled
+- [#43](https://github.com/apache/incubator-pulsar/pull/43) Add end-to-end crc32c checksum verification on message header and payload, rather than just payload. Support for intel hardware instructions to speed up computation.
+- [#26](https://github.com/apache/incubator-pulsar/pull/26) Added ability to configure the address that the broker uses to advertise itself. Needed in cases where the public hostname/ip is different than the machine interface ip (eg: in AWS EC2 instances).
+- [#38](https://github.com/apache/incubator-pulsar/pull/38) Prevent message-replay of already acknowledged messages
+- [#51](https://github.com/apache/incubator-pulsar/pull/51) Per message unacknowledged redelivery. When ack-timeout is configured, only request redelivery of messages that effectively have the timeout expired, instead of all the messages dispatched to the consumer.
+- [#48](https://github.com/apache/incubator-pulsar/pull/48) Add unacknowledged messages threshold to stop delivery to consumer that are not acknowledging messages
+- [#59](https://github.com/apache/incubator-pulsar/pull/59) Added admin method to do a one-time messages time expiration for a given subscription (independently from the TTL configured at the namespace level)
+
+Full list of changes: https://github.com/apache/incubator-pulsar/milestone/1?closed=1
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.15
+
+### 1.14
+
+#### 2016-08-31
+
+First public release of Pulsar
+
+https://github.com/apache/incubator-pulsar/releases/tag/v1.14