Multiple Cofigs

[RW-DLA]

Hi,

I have reached an issues running tests when I have 2 instances of the plug in running on a Linux machine, though it happens on windows too.

if I put the the relative path ./folder/file.csv i randomly get this error:

2026-04-08 11:27:27,259 ERROR o.a.j.t.JMeterThread: Test failed!
java.util.NoSuchElementException: No value present
at java.util.Optional.get(Optional.java:143) ~[?:?]
at com.di.jmeter.utils.FileServerExtended.readIndexed(FileServerExtended.java:689) ~[di-extended-csv-2.2.jar:?]
at com.di.jmeter.utils.FileServerExtended.readRandom(FileServerExtended.java:632) ~[di-extended-csv-2.2.jar:?]
at com.di.jmeter.config.ExtendedCsvDataSetConfig.iterationStart(ExtendedCsvDataSetConfig.java:76) ~[di-extended-csv-2.2.jar:?]
at org.apache.jmeter.control.GenericController.fireIterationStart(GenericController.java:412) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.GenericController.fireIterEvents(GenericController.java:404) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.GenericController.next(GenericController.java:170) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.LoopController.next(LoopController.java:123) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.LoopController.nextIsNull(LoopController.java:155) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.GenericController.next(GenericController.java:180) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.LoopController.next(LoopController.java:123) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.GenericController.nextIsAController(GenericController.java:235) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.GenericController.next(GenericController.java:185) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.control.LoopController.next(LoopController.java:123) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.threads.AbstractThreadGroup.next(AbstractThreadGroup.java:109) ~[ApacheJMeter_core.jar:5.6]
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:303) [ApacheJMeter_core.jar:5.6]
at java.lang.Thread.run(Thread.java:840) [?:?]

Oddly if I disable 1 of the instances of the plug in it works fine.

It also works fine if I use a full windows path.

Though this error only start a few weeks ago and nothing has changed.

Thanks in advance,

Richard

[rollno748]

Hi Richard,

Thanks for submitting this issue.

Will you be able to provide a model test plan or jmx file that could be used to reproduce this issue ??

Even a dummy sampler replaced with the structure you used is fine to go with.

Thanks

[RW-DLA]

Hi Mohamed,

I have appeared to get sone headway.

After doing so extensive testing and in the process of creating you a jmx and file structure for you to use I have come to these results and conclusions/ work around.

I have rebuilt jmx files and csv files multiple times

I appears that if you have csv files bigger that 100 rows including the header file, and you have two of the plug ins in the script that is when you experience the error.

it appears if you only have 1 extender instance and more than 100 rows, it doesn't throw the error.

My work around is to keep the rows to 100, which for the current test scenario is ok since it is not data that is burned per test.

The paths as mentioned in the original post are red herrings, apologies.

Just to note I have only seen and tested this on the random selection.

Otherwise I love the the plug in!!

Salutations,

Richard

[rollno748]

Hello

Tbh, I never tested it should work with lesser rows as well.

Can you at least point the screenshot of your csv config options and test plan structure. If I am able to reproduce, I will definitely work on it to fix that.

That would help the community

Thanks
Mohamed

[RW-DLA]

Hi,

I will send you test jmx, just busy

it works perfectly will multiple instances with data files of 3 rows plus header.

At some point today I will attach

[rollno748]

Appreciate your efforts mate !

Thanks