question: private void fillOrdinalToBlockMappingForDimension ( ) { int blockOrdinal = - 1 ; CarbonDimension dimension = null ; int index = 0 ; int prvcolumnGroupId = - 1 ; while ( index < dimensions . size ( ) ) { dimension = dimensions . get ( index ) ; if ( dimension . isColumnar ( ) || dimension . columnGroupId ( ) != prvcolumnGroupId ) { blockOrdinal ++ ; } dimensionOrdinalToBlockMapping . put ( dimension . getOrdinal ( ) , blockOrdinal ) ; prvcolumnGroupId = dimension . columnGroupId ( ) ; index ++ ; } index = 0 ; while ( index < complexDimensions . size ( ) ) { dimension = complexDimensions . get ( index ) ; dimensionOrdinalToBlockMapping . put ( dimension . getOrdinal ( ) , ++ blockOrdinal ) ; blockOrdinal = fillComplexDimensionChildBlockIndex ( blockOrdinal , dimension ) ; index ++ ; } fillBlockToDimensionOrdinalMapping ( ) ; }
target:  below method is to fill the dimension and its mapping to file blocks all the column will point to same column group