How do I pass a variable from one Thread Group to another in JMeter

Question

I have a JMeter test with 2 Thread Groups - the first is a single thread (which creates some inventory) and the second has multiple threads (which purchase all the inventory

Answer 1

I was not able to do this with variables (since those are local to individual threads). However, I was able to solve this problem with properties!

Again, my first ThreadGroup does all of the set up, and I need some information from that work to be available to each of the threads in the second ThreadGroup. I have a BeanShell Assertion in the first ThreadGroup with the following:

${__setProperty(storeid, ${storeid})};

The ${storeid} was extracted with an XPath Extractor. The BeanShell Assertion does other stuff, like checking that storeid was returned from the previous call, etc.

Anyway, in the second ThreadGroup, I can use the value of the "storeid" property in Samplers with the following:

${__property(storeid)}

Works like a charm!