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Pulsar is a distributed pub-sub messaging platform with a very
\nflexible messaging model and an intuitive client API.

\n

Learn more about Pulsar at https://pulsar.apache.org

\n

Main features

\n

Horizontally scalable (Millions of independent topics and millions
\nof messages published per second)
Strong ordering and consistency guarantees
Low latency durable storage
Topic and queue semantics
Load balancer
Designed for being deployed as a hosted service:\n
- Multi-tenant
- Authentication
- Authorization
- Quotas
- Support mixing very different workloads
- Optional hardware isolation
\n
Keeps track of consumer cursor position
REST API for provisioning, admin and stats
Geo replication
Transparent handling of partitioned topics
Transparent batching of messages

\n

Repositories

\n

This repository is the main repository of Apache Pulsar. Pulsar PMC also maintains other repositories for
\ncomponents in the Pulsar ecosystem, including connectors, adapters, and other language clients.

\n

Pulsar Core

\n

Helm Chart

\n

Pulsar Helm Chart

\n

Ecosystem

\n

Pulsar Adapters

\n

Clients

\n

\n

Dashboard & Management Tools

\n

Pulsar Manager

\n

Website

\n

Pulsar Site

\n

CI/CD

\n

Pulsar CI

\n

Archived/Halted

\n

Pulsar Connectors (bundled as pulsar-io)
Pulsar Translation
Pulsar SQL (Pulsar Presto Connector) (bundled as pulsar-sql)
Ruby Client

\n

Pulsar Runtime Java Version Recommendation

\n

pulsar ver > 2.10 and master branch

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Components	Java Version
Broker	17
Functions / IO	17
CLI	17
Java Client	8 or 11 or 17

\n

2.8 <= pulsar ver <= 2.10

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Components	Java Version
Broker	11
Functions / IO	11
CLI	8 or 11
Java Client	8 or 11

\n

pulsar ver < 2.8

\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Components	Java Version
All	8 or 11

\n

Build Pulsar

\n

Requirements

\n

\n
JDK
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Pulsar Version JDK Version
master and 2.11 + JDK 17
2.8 / 2.9 / 2.10 JDK 11
2.7 - JDK 8
\n
\n
Maven 3.6.1+
\n
\n
zip
\n

\n

\n
Note:
\n
This project includes a Maven Wrapper that can be used instead of a system-installed Maven.
\nUse it by replacing mvn by ./mvnw on Linux and mvnw.cmd on Windows in the commands below.
\n

\n

Build

\n

Compile and install:

\n

$ mvn install -DskipTests

\n

Compile and install individual module

\n

$ mvn -pl module-name (e.g: pulsar-broker) install -DskipTests

\n

Minimal build (This skips most of external connectors and tiered storage handlers)

\n

mvn install -Pcore-modules,-main -DskipTests

\n

Run Unit Tests:

\n

$ mvn test

\n

Run Individual Unit Test:

\n

$ mvn -pl module-name (e.g: pulsar-client) test -Dtest=unit-test-name (e.g: ConsumerBuilderImplTest)

\n

Run Selected Test packages:

\n

$ mvn test -pl module-name (for example, pulsar-broker) -Dinclude=org/apache/pulsar/**/*.java

\n

Start standalone Pulsar service:

\n

$ bin/pulsar standalone

\n

Check https://pulsar.apache.org for documentation and examples.

\n

Build custom docker images

\n

The commands used in the Apache Pulsar release process can be found in the release process documentation.

\n

Here are some general instructions for building custom docker images:

\n

Docker images must be built with Java 8 for branch-2.7 or previous branches because of ISSUE-8445.
Java 11 is the recommended JDK version in branch-2.8, branch-2.9 and branch-2.10.
Java 17 is the recommended JDK version in master.

\n

The following command builds the docker images apachepulsar/pulsar-all:latest and apachepulsar/pulsar:latest:

\n

mvn clean install -DskipTests\n# setting DOCKER_CLI_EXPERIMENTAL=enabled is required in some environments with older docker versions\nexport DOCKER_CLI_EXPERIMENTAL=enabled\nmvn package -Pdocker,-main -am -pl docker/pulsar-all -DskipTests

\n

After the images are built, they can be tagged and pushed to your custom repository. Here's an example of a bash script that tags the docker images with the current version and git revision and pushes them to localhost:32000/apachepulsar.

\n

image_repo_and_project=localhost:32000/apachepulsar\npulsar_version=$(mvn initialize help:evaluate -Dexpression=project.version -pl . -q -DforceStdout)\ngitrev=$(git rev-parse HEAD | colrm 10)\ntag=\"${pulsar_version}-${gitrev}\"\necho \"Using tag $tag\"\ndocker tag apachepulsar/pulsar-all:latest ${image_repo_and_project}/pulsar-all:$tag\ndocker push ${image_repo_and_project}/pulsar-all:$tag\ndocker tag apachepulsar/pulsar:latest ${image_repo_and_project}/pulsar:$tag\ndocker push ${image_repo_and_project}/pulsar:$tag

\n

Setting up your IDE

\n

Read https://pulsar.apache.org/contribute/setup-ide for setting up IntelliJ IDEA or Eclipse for developing Pulsar.

\n

Documentation

\n

\n
Note:
\n
For how to make contributions to Pulsar documentation, see Pulsar Documentation Contribution Guide.
\n

\n

Contact

\n

Mailing lists

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Name	Scope	Subscribe	Unsubscribe	Archives
users@pulsar.apache.org	User-related discussions	Subscribe	Unsubscribe	Archives
dev@pulsar.apache.org	Development-related discussions	Subscribe	Unsubscribe	Archives

\n

Slack

\n

Pulsar slack channel at https://apache-pulsar.slack.com/

\n

You can self-register at https://communityinviter.com/apps/apache-pulsar/apache-pulsar

\n

Security Policy

\n

If you find a security issue with Pulsar then please read the security policy. It is critical to avoid public disclosure.

\n

Reporting a security vulnerability

\n

To report a vulnerability for Pulsar, contact the Apache Security Team. When reporting a vulnerability to security@apache.org, you can copy your email to private@pulsar.apache.org to send your report to the Apache Pulsar Project Management Committee. This is a private mailing list.

\n

https://github.com/apache/pulsar/security/policy contains more details.

\n

License

\n

Licensed under the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0

\n

Crypto Notice

\n

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See The Wassenaar Arrangement for more information.

\n

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

\n

The following provides more details on the included cryptographic software: Pulsar uses the SSL library from Bouncy Castle written by http://www.bouncycastle.org.

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