Add the client usage when using multi-hosts. (#5121)
Add the client usage when using multi-hosts. (#5121)


massakam/pulsar,merlimat/pulsar,massakam/pulsar,yahoo/pulsar,yahoo/pulsar,merlimat/pulsar,merlimat/pulsar,yahoo/pulsar,massakam/pulsar,merlimat/pulsar,merlimat/pulsar,yahoo/pulsar,massakam/pulsar,massakam/pulsar,yahoo/pulsar,massakam/pulsar,merlimat/pulsar,yahoo/pulsar