@Override public TAlterTableParams toThrift() { TAlterTableParams params = super.toThrift(); params.setAlter_type(TAlterTableType.CHANGE_COLUMN); TAlterTableChangeColParams colParams = new TAlterTableChangeColParams(); colParams.setCol_name(colName); colParams.setNew_col_def(newColDef.toThrift()); params.setChange_col_params(colParams); return params; }