@Override
  protected boolean cacheTableDescriptor() {
    return false;
  }
Starts a HRegionServer at the default location.
<p/>
Don't start any services or managers in here in the Constructor. Defer till after we register
with the Master as much as possible. See {@link #startServices}.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java