That's what I thought as well but I checked the number of files didn't reduce now after adding the job it did show less files and compressed. That's why I asked @Gil for verification. Here is how I did one of the table we get like 24 files every hour. One day I noticed it was like total 300 files then I was under assumption if we add 24 files next day after compression it should go down it kept increasing. Now after I created the job it's now showing like 4 or 5 files when I look in the morning and as day progress I see the files it gets added and next day again it will come down to 4 or 5 files.