There are 2 files, Master and User. We need to compare 2
files and prepare a output log file which lists out missing
Rolename for each UserName between Master and User file.

Please find the sample data-

MASTER.csv
----------
Org|Tmp_UsrID|ShortMark|Rolename
---|---------|----------|------------
AUS|0_ABC_PW |ABC PW |ABC Admin PW
AUS|0_ABC_PW |ABC PW |MT Deny all
GBR|0_EDT_SEC|CR Edit |Editor
GBR|0_EDT_SEC|CR Edit |SEC MT103
GBR|0_EDT_SEC|CR Edit |AB User




USER.csv
--------
Org|UserName|ShortMark|Rolename
---|--------|---------|------------
AUS|charls |ABC PW |ABC Admin PW
AUS|amudha |ABC PW |MT Deny all
GBR|sandya |CR Edit |Editor
GBR|sandya |CR Edit |SEC MT103
GBR|sandya |CR Edit |AB User
GBR|sarkar |CR Edit |Editor
GBR|sarkar |CR Edit |SEC MT103


Required Output file:
---------------------
Org|Tmp_UsrID|UserName|Rolename |Code
---|---------|--------|------------|--------
AUS|0_ABC_PW |charls |ABC Admin PW|MATCH
AUS|0_ABC_PW |charls |MT Deny all |MISSING
AUS|0_ABC_PW |amudha |ABC Admin PW|MISSING
AUS|0_ABC_PW |amudha |MT Deny all |MATCH
GBR|0_EDT_SEC|sandya |Editor |MATCH
GBR|0_EDT_SEC|sandya |SEC MT103 |MATCH
GBR|0_EDT_SEC|sandya |AB User |MATCH
GBR|0_EDT_SEC|sarkar |Editor |MATCH
GBR|0_EDT_SEC|sarkar |SEC MT103 |MATCH
GBR|0_EDT_SEC|sarkar |AB User |MISSING

Both the files are mapped through Organization, Shor_mark.
So, based on each Organization, Short_Mark, for each
UserName from User.csv, we need to find the Matching and
Missing Rolename. I am able to bring Matching records in
the output. But really I don't find any concept or logic to
achieve "MISSING" records which are present in Master and
not in User.csv for each UserName. Please help out guys.
Let me know if you need any more information.

Note:- In User.csv file, there are n number of
Organization, under which n number Shortmark comes which
has n number of UserName.