Collectd DPDK Telemetry plugin

Question

I want to use collectd's DPDK telemetry plugin for exporting metrics from DPDK application. But it won't work. I had uncommented LoadPlugin dpdk_telemetry, and my Collectd config for dpdk-telemetry is :

<Plugin dpdk_telemetry>
        ClientSocketPath "/var/run/dpdk/rte/mp_socket"
        DpdkSocketPath "/var/run/dpdk/rte/dpdk_telemetry.v2"
</Plugin>

I expect Collectd to work as before, but when I open Collectd output metrics (port 9103 by default), It won't show anything.