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From Philippe Mouawad <>
Subject Re: Concerns about change in JTL writing
Date Wed, 08 Aug 2018 08:56:54 GMT
On Wednesday, August 8, 2018, Andrey Pokhilko <> wrote:

> Hi,
> I took the latest snapshot of JMeter and I'm shocked by the change in
> CSV JTL writing. It is strange that it writes subsamples now with no
> respect to "Save Sub Results" flag. I simply can't turn new behavior off.

how did you do that ?
Through property
or in a different way , in the latter case how ?

> It will break all the automated scripts written in the ecosystem. I run
> the test with Aggregate Report, I see one number. If I save it into CSV
> JTL and re-load it in Aggregate Report, I see completely different
> picture. All my response times are counted twice now.

That would be a bug that we need to fix.
 The intention of the change was just to respect the
flag for csv also.

It was only taken into account  for xml.

> I believe something really breaking has happened, and it will hurt
> users. I think CSV JTL writer has to respect the "Save Sub Results" flag
> and not have that flag enabled by default. Otherwise, we break any
> automation that were reading CSV JTL assuming only top-level samples are
> written and math of average response times is consistent.
> Or maybe I'm just doing something wrong?
> --
> Andrey Pokhilko

Philippe Mouawad.

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