## Description:
Pulsar is a highly scalable, low latency messaging platform running on
commodity hardware. It provides simple pub-sub semantics over topics,
guaranteed at-least-once delivery of messages, automatic cursor management for
subscribers, and cross-datacenter replication.
## Issues:
- There are no issues requiring board attention at this time.
## Project Activity:
- The project has released 2.5.0 in December that included Highlights
include:
* [PIP-41] Introduce Protocol Handler API
* [PIP-45] Pluggable metadata interface
* [PIP-44] Separate schema compatibility checker for producer and consumer
* [PIP-43] Producer send messages with different schema
* [PIP-51] Introduce sticky consumer
* [PIP-38] Support batch receive in java client.
* [PIP-52] Add support of dispatch throttling relative to publish-rate
* Upgraded to ZooKeeper 3.5
* Upgraded to BookKeeper 4.10.0
* HDFS offloader for Pulsar tiered storage
- Work is underway for next release 2.6.0
- Pulsar NodeJS client library 1.1.0 was released on Feb 18th.
- Several improvement proposals have been submitted:
* PIP 59: gPRC Protocol Handler
* PIP 58: Support Consumers Set Custom Retry Delay
* PIP 57: Improve Broker's Zookeeper Session Timeout Handling
* PIP 56: Python3 Migration
* PIP 55: Refresh Authentication Credentials
* PIP 54: Support acknowledgement at batch index level
* PIP 53: Contribute DotPulsar to Apache Pulsar
* PIP 52: Message dispatch throttling relative to publish rate
- Several talk on Pulsar were presented at conferences and meetups, in US,
Europe and China, both by Pulsar committer/PMC members as well as other
members of the community. Non-exaustive list:
* A Pulsar meetup was held on Jan 15 in Toronto. Cory Darby gave a talk
about
"RIP Apache Kafka, long live Apache Pulsar" and Tamer A shared about
"Pulsar in Action, getting your hands dirty with Pulsar".
* Apache IoTDB X Apache Pulsar meetup was held on Jan 4 in Beijing. Jia
Zhai from StreamNative shared about "Apache Pulsar: from messaging
system to event streaming platform". Besides, Guangning E from
StreamNative gave a talk about
"How to connect Apache Pulsar to IoTDB with Pulsar IO".
* Pulsar Summit SF was initially scheduled for Apr 28th though due to
current sitation it has been postponed to a TBD date after summer.
- Work is ongoing for next release (2.6.0) and for to reach the first
release for the native Go client library.
## Community Health:
- There is healthy grow in the community, several users are starting to
become contributors to the project and engaging more and more with
the community.
## Membership Data:
- There are currently 30 committers and 24 PMC members in this project.
- The Committer-to-PMC ratio is 5:4.
- Community changes, past quarter:
* No new PMC members. Last addition was Penghui Li on 2019-09-16.
* No new committers. Last addition was Liu Yu on 2019-11-28.
## Releases:
- 2.5.0 was released on Dec. 6th 2019
- Pulsar-client-node 1.1.0 was released on Feb. 18th 2020
## Mailing list activity:
- Activity on the mailing lists remains high with a mixture of new users,
contributors, and deeper more experienced users and contributors sparking
discussion and questions and filing bugs or new features.
- us...@pulsar.apache.org:
- 140 subscribers (+10 from Dec 2019) - 137 emails sent to list in
last 3 months
- dev@pulsar.apache.org:
- 174 subscribers (+21 from Dec 2019) - 425 emails sent to list in
last 3 months
## Slack activity:
* 1673 Members (1311 in Dec 2019)
* 234 Active weekly users (160 in Dec 2019)
## GitHub activity:
- 438 PRs from 88 contributors (+11) were merged in the last 3 months
- 278 Issues were created and 165 closed in the last 3 months
- 5218 Stars (up from 4608 in Dec 2019)
--
Matteo Merli
<mme...@apache.org>
