[doc][monitoring][metadata] metadata store metrics doc (#17088)
[doc][monitoring][metadata] metadata store metrics doc (#17088)


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