public RSGroupInfo getRSGroupInfo(String groupName) throws IOException {
    try {
      GetRSGroupInfoResponse resp = stub.getRSGroupInfo(null,
        GetRSGroupInfoRequest.newBuilder().setRSGroupName(groupName).build());
      if (resp.hasRSGroupInfo()) {
        return ProtobufUtil.toGroupInfo(resp.getRSGroupInfo());
      }
      return null;
    } catch (ServiceException e) {
      throw ProtobufUtil.handleRemoteException(e);
    }
  }
Gets {@code RSGroupInfo} for given group name.
hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java