Add write read latency histogram metrics to DB client and emit from coordinator#1533

Merged

robskillington merged 2 commits intomasterfrom r/add-write-read-latency-histogram-metrics

Apr 4, 2019

+75-45

Commits on Apr 4, 2019

Add write/read histogram latency metrics for DB client and pass scope from coordinator to DB client
Rob Skillington
committed
Use subscope for metrics scope for DB client
Rob Skillington
committed