DSXchange

what is the significance of these in reference match stage

qsMatchWeight.
qsMatchPattern.
qsMatchLRFlag.
qsMatchExactFlag.
qsMatchPassNumber
qsMatchDataID
qsMatchSetId
qsMatchType

The Match stage does not compare two columns unless you use a two-file match with one column in each file.

The Match stage compares rows within one file (searching for potential duplicates) or rows between two files (also searching for potential duplicates).

I don't think you understand the role of this stage type.