7 Replies Latest reply: Feb 26, 2018 12:59 PM by Rob Wunderlich RSS

    Empty QVD files are growing in size if generated in the loop

    Vladimir Komarov

      I am running a data extraction from large database and I have to load the data one day at a time. I am saving these daily files into QVD and concatenating them afterwards.


      Some of the extractions are returning 0 records and some of these QVD files are empty.


      But I’ve noticed that these empty files are growing in size after every cycle…

      Screen Shot 2018-02-24 at 2.05.56 PM.png

      This growth depends on the number of fields in the table, of course, but I could not find any reason for that.


      I’ve tried this on both QS 3.2 and QS Sept 2017, but results are the same.


      I’ve saved these empty daily tables to CSV files, and they are identical in size:

      Screen Shot 2018-02-24 at 2.08.19 PM.png

      I’ve created a sample app that generates empty files and here are results (attached).


      Any idea why it’s happening?