can't we open the file in random access and go to a line ? Kind of RandomAccessFile + search newline character ? Not sure it works
On Wednesday, September 4, 2013, sebb wrote: > On 4 September 2013 09:27, Philippe Mouawad > <[email protected]<javascript:;>> > wrote: > > One useful case is distributed testing where you don't want to bother > > splitting files for each injector. > > Without this all injector will process lines in same order. > > With it, no need for splitting. > > Separately randomised files may still result in two servers processing > the same entry. > Probably not at the same time, though that is not impossible either. > > The larger the input file, the less likely it is that the same entry > will be processed more than once, but the larger the file, the larger > the processing overheads. > > > of course I am not talking about uniqueness which is another matter. > > > > As always, it is a productivity feature, of course you can do it by hand. > > The problem is that randomising the lines at run-time is bound to > increase the CPU and/or memory requirements. > > I think it would be a mistake to include this feature in standard JMeter. > > > Regards > > Philippe > > > > On Tuesday, September 3, 2013, sebb wrote: > > > >> On 3 September 2013 07:45, Philippe Mouawad > >> <[email protected]<javascript:;> > <javascript:;>> > >> wrote: > >> > Hello, > >> > I think it would be useful to implement a mechanism to extract a line > >> > randomly from csv, > >> > I often meet this case > >> > >> What is the use case? > >> > >> > and it's annoying to handle, it would be nice to > >> > have it oob. > >> > > >> > One problem is how to ensure uniquness if it's another requirement. > >> > >> That's easy. Just randomise the CSV file before starting the test run. > >> > >> That's how String From File came about. > >> We had a long-running test that used millions of PINs that could only > >> be used once, so we randomised them and split them into separate files > >> which could be used once. > >> > >> > Work with a modulo per thread or something like it ? > >> > compute at start chunks of values ? > >> > > >> > > >> > > >> > > >> > -- > >> > Cordialement. > >> > Philippe Mouawad. > >> > > > > > > -- > > Cordialement. > > Philippe Mouawad. > -- Cordialement. Philippe Mouawad.
