Hadoop: Fix a nasty IO bug. CephInputStream.read() needs to return an int between 0 and 255, but bytes are signed and casting preserves that. Adjust if needed.
Hadoop: Fix a nasty IO bug.
CephInputStream.read() needs to return an int between 0 and 255,
but bytes are signed and casting preserves that. Adjust if needed.

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph