in concurrency-loadbalancer-core/src/main/java/com/uber/concurrency/loadbalancer/AbstractConcurrencyLoadBalancer.java [212:223]
void markCompletion(T task, boolean succeed) {
Meter taskMeter = taskRequestRate.get(task);
if (taskMeter == null) {
return;
}
if (succeed) {
successRate.mark();
} else {
failureRate.mark();
}
}