public RSGroupInfo getRSGroupInfoOfTable(TableName tableName) throws IOException {
    GetRSGroupInfoOfTableRequest request = GetRSGroupInfoOfTableRequest.newBuilder()
      .setTableName(ProtobufUtil.toProtoTableName(tableName)).build();
    try {
      GetRSGroupInfoOfTableResponse resp = stub.getRSGroupInfoOfTable(null, request);
      if (resp.hasRSGroupInfo()) {
        return ProtobufUtil.toGroupInfo(resp.getRSGroupInfo());
      }
      return null;
    } catch (ServiceException e) {
      throw ProtobufUtil.handleRemoteException(e);
    }
  }
Gets {@code RSGroupInfo} for the given table's group.
hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminClient.java