if the current region server fails, and master detects that and assigns the region to another region server, the new region server needs to read the SSTables and HLog and construct the memtable.
the master reassignment+memtable construction process, how long roughly does it take? during this process, the region is unavailable to clients (though for only a short while), right? if so, I wonder how actual HBase installations in production handle this? thanks Yang
