public void updateReplicaThreadCycleIteration(String replicaThread) {
    replicaThreadsCycleIterations.computeIfAbsent(replicaThread, thread -> registry.counter(MetricRegistry.name(ReplicaThread.class,
        replicaThread + "-CycleIterations"))).inc();
  }
Increase the number of replication cycle
ambry-replication/src/main/java/com/github/ambry/replication/ReplicationMetrics.java