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A benchmark of message queues with data replication and at-least-once delivery guarantees.

Setting up the environment

Message queues and test servers are automatically provisioned using Ansible on AWS. You will need to have the AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY present in the environment for things to work properly, as well as Ansible and Boto installed.

Metrics are gathered using Prometheus and visualized using Grafana.

Here are the steps needed to test Kafka (other queues are similar). Open the ansible directory in the console and:

  • provision a kafka cluster by running ansible-playbook install_and_setup_kafka.yml. Note to change the size of the instance to the desired one.
  • provision a number of sender and receiver nodes using ansible-playbook provision_mqperf_nodes.yml. Adjust the number and size of nodes depending on the test you want to run. Keep in mind that after each code change, you'll need to remove the fat-jars from the target/scala-2.11 directory and re-run provision_mqperf_nodes.yml.
  • provision the prometheus/grafana server by running ansible-playbook install_and_setup_prometheus.yml. This must be done each time after provisioning new sender/receiver nodes (previous step) so that prometheus is properly configured to scrape the new servers for metrics
  • setup grafana: open the grafana panel on the :3000 port (admin/pass), create a new prometheus data source (local-instance-ip:3000), and import the dashboard from json (prometheus/dashboard.json)
  • modify run-tests.yml with the correct test name, run the test, observe results!

Implementation-specific notes


Before running the tests, create the kafka topics by running ansible-playbook kafka_create_topic.yml


  • when installing rabbit mq, you need to specify the erlang cookie, e.g.: ansible-playbook install_and_setup_rabbitmq.yml -e erlang_cookie=1234
  • the management console is available on port 15672 (guest/guest)
  • if you'd like to ssh to the broker servers the user is centos
  • queues starting with ha. will be mirrored


  • the management console is available on port 8161 (admin/admin)

ActiveMQ Artemis

  • note that for the client code, we are using the same one as for ActivqMQ (ActiveMq.scala)
  • there is no dedicated management console for ActiveMQ Artemis, however monitoring is possible via exposed Jolokia web app. Jolokia web application is deployed along ActiveMQ Artemis by default. To view broker's data:
    • Navigate to: http://<AWS_EC2_PUBLIC_IP>:8161/jolokia/list - plain JSON content should be visible - to verify if it works.
    • To view instance's state navigate to e.g.: http://<AWS_EC2_PUBLIC_IP>:8161/jolokia/read/org.apache.activemq.artemis:address="mq",broker="<BROKER_NAME>",component=addresses, where: org.apache.activemq.artemis:address="mq",broker="<BROKER_NAME>",component=addresses is the key (" signs are obligatory). To know other keys refer to the previous step.
    • <BROKER_NAME> typically resolves to AWS_EC2_PRIVATE_IP with . replaced with _.
  • configuration changes: bumped Xmx, bumped global-max-size


  • configuration changes: see the mq implementation

Oracle AQ support

  • to build the oracleaq module, first install the required dependencies available in your Oracle DB installation

    • aqapi.jar (oracle/product/11.2.0/dbhome_1/rdbms/jlib/aqapi.jar)
    • ojdbc6.jar (oracle/product/11.2.0/dbhome_1/jdbc/lib/ojdbc6.jar)
  • to install a dependency in your local repository, create a build.sbt file:

organization := ""
name := "ojdbc6"
version := "1.0.0"
scalaVersion := "2.11.6"
packageBin in Compile := file(s"${name.value}.jar")

Now you can publish the file. It should be available in ~/.ivy2/local/

$ sbt publishLocal

Ansible notes

Zookeeper installation contains an ugly workaround for a bug in Cloudera's RPM repositories ( See ansible/roles/zookeeper/tasks/main.yml. This should be removed in the future when the bug is fixed by Cloudera.


  • I'm getting: skipping: no hosts matched, why? Probably you are runing ansible from project root. Instead cd to ansible/ (where ansible.cfg is located) and try to run playbook from this location.