Talend - compare 2 files and keep entries that are not common to both
diff, talend
Solution
It sounds like you're not properly defining an output schema and the associated data for the defined columns.
Your tMap should look something like this:
Where I've joined 2 files that have an id, a name and an age.
What is worth mentioning is that Gabriele's answer in that question will only test the diff one way. To get a bidirectional diff of the files you'll want to replicate the job and switch the main flow and the lookup of the files and output both of these to a tBufferOutput component and then read them back in with a tBufferInput component and output this as your diff file.
So your job might end up looking like this:
Problem
I follow this solution to compare two files in Talend Open Studio. It's seem to work but in my output file, I only have commas for each line. But the number of lines is correct. I don't understand why.