public boolean hasSucceeded() {
    if (hasSucceededLocally() && hasSucceededRemotely()) {
      routerMetrics.paranoidDurabilitySuccessCount.inc();
      return true;
    }
    return false;
  }
Check if the operation has succeeded. This is determined by the number of successful responses received from both
local and remote replicas.
@return true if we have received enough successful responses from both local and remote replicas, false otherwise.
ambry-router/src/main/java/com/github/ambry/router/ParanoidDurabilityOperationTracker.java