[Bug 65446] Report / Dashboard: Percentile over time values depend on the order of the data even with large window size

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=65446

--- Comment #1 from Rithvik Patibandla <ri...@gmail.com> ---
I did a little more digging and I think the issue is with the following line:

private static final int SLIDING_WINDOW_SIZE = JMeterUtils.getPropDefault(
            ReportGeneratorConfiguration.REPORT_GENERATOR_KEY_PREFIX
                    + ReportGeneratorConfiguration.KEY_DELIMITER
                    + "statistic_window", 20000);


getPropDefault() calls appProperties.getProperty(). But in the appProperties we
are only loading jmeter.properties, user.properties, system.properties etc and
_not_ reportgenerator.properties where the value for statistic_window is
supposed to be set. So the default value of 20,000 is being picked irrespective
of what is set in the properties file. I confirmed this by moving the property
to jmeter.properties file and then my custom value got picked as expected. 

If the maintainers can confirm this as an issue, I can raise a pull request
with the fix which uses ReportGeneratorConfiguration instead. This issue was
raised in a separate thread as well:
https://bz.apache.org/bugzilla/show_bug.cgi?id=58959

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