Distributed file system that lets to specify on which machine a file is stored

Question

I am looking for a distributed file system that for some files would let me to specify on which machine(s) they are stored (during the creation time). Ideally with a Java API. Does something like this exist?

Answer 1

HDFS has a block placement policy which can be plugged with a new policy. More details here.

Also, MapR implementation of Hadoop has a more robust control over data placement. More details here.