added passthrough for single shard/single node
added passthrough for single shard/single node

aglne/Solandra,aglne/Solandra,aglne/Solandra,aglne/Solandra,yonglehou/Solandra,tjake/Solandra,tjake/Solandra,yonglehou/Solandra,yonglehou/Solandra,yonglehou/Solandra,aglne/Solandra,yonglehou/Solandra,tjake/Solandra,tjake/Solandra