public void updateReplicationLagInSecondsForBlob(String datacenter, long timeInSeconds) {
    if (datacenter != null && dcToReplicaLagInSecondsForBlob.containsKey(datacenter)) {
      dcToReplicaLagInSecondsForBlob.get(datacenter).update(timeInSeconds);
    }
  }
Update the replication lag in seconds for Put Blob.
@param datacenter The datacenter
@param timeInSeconds The replication lag in seconds
ambry-replication/src/main/java/com/github/ambry/replication/ReplicationMetrics.java