@Override
  public void onDisconnectionComplete(ReplicaId replicaId) {
    partitionToDisconnectionSuccess.put(replicaId.getPartitionId().toPathString(), true);
    replicaToLagInfos.remove(replicaId);
    countDownLatch(partitionToDisconnectionLatch, replicaId.getPartitionId().toPathString());
  }
{@inheritDoc}
This method will count down the latch associated with given replica and
unblock external service waiting on this latch.
ambry-clustermap/src/main/java/com/github/ambry/clustermap/AmbryReplicaSyncUpManager.java