Incorrect API Timing

[vjkoskela]

There appears to be a race condition or outright bug timing the proxying of the KairosDb metrics list API:

{"time":"2020-04-01T00:17:09.559Z","name":"log","level":"warn","data":{"message":"Sample rejected; name=kairosService/metricNames/request, sample=TsdTimer{Name=kairosService/metricNames/request, StopWatch=TsdStopWatch{IsRunning=true, StartNanos=41736854219563062, Elapsed=null}, IsAborted=false, IsOpen=false}, rejections=[com.arpnetworking.metrics.impl.TsdMetrics$StoppedTimersPredicate@6ec8a33d]"},"context":{"host":"ttd1b-i-02d5699f25971b083.aws.dbxnw.net","processId":"91431","threadId":"mportal-akka.actor.default-dispatcher-16","logger":"c.a.m.i.TsdMetrics"},"id":"c7d3f769-9cc0-4878-9623-4e375328470e","version":"0"}
{"time":"2020-04-01T00:17:09.618Z","name":"log","level":"warn","data":{"message":"Timer closed/stopped after metrics instance closed; timer=TsdTimer{Name=kairosService/metricNames/request, StopWatch=TsdStopWatch{IsRunning=true, StartNanos=41736854219563062, Elapsed=null}, IsAborted=false, IsOpen=false}"},"context":{"host":"ttd1b-i-02d5699f25971b083.aws.dbxnw.net","processId":"91431","threadId":"mportal-akka.actor.default-dispatcher-16","logger":"c.a.m.i.TsdTimer"},"id":"8940400d-01ac-4959-82ae-08ac8bd87cd4","version":"0"}

This issue could either be in the periodic metrics on in its usage in Metrics Portal.