DSXchange

i have created one Parallel job.in that job i used Externalsource stage as source stage and target file as sequentail file satge.in external source stage i am calling one '.sh' script and this script is reading file information into one coumn and file name into second column.

job is running fine, but some records are not geeting populated filename in second column.in unix box, Target file has loaded the record information and file name .but i could not see the file name when tried to view the data in sequental file satge.this is heppening for large volume files only.