Is there any APIs to move data blocks in HDFS from one node to another *
after* they have been added to HDFS? Also can we write some sort of
pluggable module (like scheduler) that controls how data gets placed in
hadoop cluster? I am working with hadoop-1.0.3 version and I couldn't find
any filesystem APIs available to do that.
PS: I am working on a research project where we want to investigate how to
optimally place data in hadoop.