Have problem in installing

[L0kayata]

I supposed to run pulsar in docker in standalone mode, so I modified the standalone.conf file with adding the following properties:

messagingProtocols=mqtt
protocolHandlerDirectory=/root/mop/mqtt-impl/target
mqttListeners=mqtt://127.0.0.1:1883
advertisedAddress=127.0.0.1

However, when running the pulsar, it showed the following message:

02:37:07.832 [main] INFO  org.apache.pulsar.broker.protocol.ProtocolHandlerUtils - Searching for protocol handlers in /root/mop/mqtt-impl/target
02:37:07.832 [main] WARN  org.apache.pulsar.broker.protocol.ProtocolHandlerUtils - Protocol handler directory not found
02:37:07.834 [main] ERROR org.apache.pulsar.broker.PulsarService - Failed to start Pulsar service: No protocol handler is found for protocol `mqtt`. Available protocols are : {}

I had built the MoP project succesfully and the NAR file had occurred in the /root/mop/mqtt-impl/target directory correctly. I want to know if my process of installing had made some mistakes. Thank you very much.

[Technoboy-]

You should keep docker can visit the path /root/mop/mqtt-impl/target.

[L0kayata]

Thank you. I changed the path to docker volume and solved the problem.