What is the motivation for storing related records together in a key-value store? Explain the idea using the notion of an entity group. Why is it easier for a distributed file system such as GFS or...

What is the motivation for storing related records together in a key-value store?

Explain the idea using the notion of an entity group.

Why is it easier for a distributed file system such as GFS or HDFS to support

replication than it is for a key-value store?