[Pulsar Community Weekly Update] 2020-02-15 ~ 2020-02-28

[Yu Liu <yu...@streamnative.io>]

Dear Pulsar enthusiast,

This is the Pulsar community weekly update for 2020-02-15 ~
2020-02-28, with updates on improving ZooKeeper session expiry handling,
supporting message acknowledgment at the batch index level, release 2.5.1
and many features and bug fixes.

This Pulsar community weekly update is also available at
https://streamnative.io/weekly/2020/2020-02/2020-02-28-pulsar-weekly/.

*All Pulsar community weekly updates are available at
**https://streamnative.io/weekly/
<https://streamnative.io/weekly/>.*

================
Development
================

- [PIP-57] The discussion of improving Broker's ZooKeeper session expiry
handling logic.


https://lists.apache.org/thread.html/r1f0de583a2d02f9aeff0cadc2bab0fcfb41bf092cfdc7ff4cc9ed1bc%40%3Cdev.pulsar.apache.org%3E

https://github.com/apache/pulsar/wiki/PIP-57%3A-Improve-Broker%27s-Zookeeper-Session-Timeout-Handling

- [PIP-54] Support message acknowledgment at the batch index level.


https://lists.apache.org/thread.html/rdcc306653be6ac6d910e7302096ddae8e1a9e563df20cf6ca73085de%40%3Cdev.pulsar.apache.org%3E

https://github.com/apache/pulsar/wiki/PIP-54:-Support-acknowledgment-at-batch-index-level

- [PIP-58] Allow configuring a retry topic for consumers to customize retry
delay when using dead letter topic feature.


https://lists.apache.org/thread.html/r5ab7533b6461f29b8ff18e4c51e058226a1b3081fddc5649b234b7fc%40%3Cdev.pulsar.apache.org%3E

https://github.com/apache/pulsar/wiki/PIP-58-%3A-Support-Consumers--Set-Custom-Retry-Delay

- [Release 2.5.1] Guangning started the discussion of releasing 2.5.1
version.


https://lists.apache.org/thread.html/rfb8dcda87b8fefb474d1c06d97ab53d608f8364f0f6f65f47dd7025c%40%3Cdev.pulsar.apache.org%3E

================
Notable Feature
================

- [Broker] Introduce maxMessagePublishBufferSizeInMB configuration to avoid
broker OOM (Release: 2.6.0).

    https://github.com/apache/pulsar/pull/6178

- [CLI] Support `unload` all partitions of a partitioned topic (Release:
2.6.0).

    https://github.com/apache/pulsar/pull/6187

- [Admin] Enable get precise backlog and backlog without delayed messages
(Release: 2.6.0).

    https://github.com/apache/pulsar/pull/6310

- [SQL] KeyValue schema support for pulsar sql (Release: 2.6.0).

    https://github.com/apache/pulsar/pull/6325

================
Notable Bug Fix
================

- [Broker] Avoid getting partition metadata while the topic name is a
partition name (Release: 2.6.0, 2.5.1).

    https://github.com/apache/pulsar/pull/6339

- [Broker] Creating a topic does not wait for creating cursor of
replicators (Release: 2.6.0, 2.5.1).

    https://github.com/apache/pulsar/pull/6364

- [Broker] Seek to the first one >= timestamp (Release: 2.6.0, 2.5.1).

    https://github.com/apache/pulsar/pull/6393

- [Broker] Start reader inside batch result in reading first message in
batch (Release: 2.6.0, 2.5.1).

    https://github.com/apache/pulsar/pull/6345

- [Broker] Consumers received duplicated deplayed messages upon restart.

    https://github.com/apache/pulsar/pull/6404

- [Client][Java] Stop shade snappy-java in pulsar-client-shaded (Release:
2.6.0, 2.5.1).

    https://github.com/apache/pulsar/pull/6375

- [Client] Fix publish buffer limit does not take effect (Release: 2.6.0,
2.5.1).

    https://github.com/apache/pulsar/pull/6431

- [Schema] Fix the problem with parsing of an Avro schema related to
shading in pulsar-client.

    https://github.com/apache/pulsar/pull/6406

- [Proxy][Security] Fix the bug of authenticationData isn't initialized
(Release: 2.6.0, 2.5.1).

    https://github.com/apache/pulsar/pull/6440

================
Event / News
================

- [Summit] Pre-registration for Pulsar Summit 2020 is open. Welcome to join
the first-ever Pulsar conference with 20+ in-depth technical talks from
event streaming experts and connect to the messaging and streaming
community.

    https://pulsar-summit.org/

*If we miss anything, welcome to reply to this thread, thank you.*



Cheers,


Sijie Guo, Yu Liu (@Anonymitaet)