If HDFS is deployed with a single name node, what limitations may exist?

The amount of leaf swallowing of the entire distributed file system is limited by the throughput of a single name node

It will affect the functional implementation of the upper-level components based on HDFS

The number of objects (files, blocks) that a name node can hold is limited by the size of the memory space

Failure of this unique name node will render the entire cluster unavailable