protected void setBigJoin(String[] masterLabels, String masterColumn,
                              String dataColumn, List<String> masterData) {
        setBigJoin(masterLabels, masterColumn, dataColumn, null, masterData);
    }
protected void setBigJoin ( String [ ] masterLabels , String masterColumn , String dataColumn , List < String > masterData ) { setBigJoin ( masterLabels , masterColumn , dataColumn , null , masterData ) ; }
to join the data that does not fit into memory.
@param masterLabels label of master data
@param masterColumn master column
@param dataColumn data column
@param masterData master data