throws MasterNotRunningException, ZooKeeperConnectionException, IOException {
final byte[] toBeUnassigned = getRegionName(regionName);
executeCallable(new MasterCallable<Void>(getConnection()) {
@Override
public Void call(int callTimeout) throws ServiceException {
UnassignRegionRequest request =
RequestConverter.buildUnassignRegionRequest(toBeUnassigned, force);
master.unassignRegion(null, request);
return null;
}
});