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I am running jMeter via Taurus (bzt) on CentOS. My first call is a login that needs to get the access tokens from the returned JSON. When I run this test on my Mac everything works as expected. But when I run it on my CentOS server I get the following error every time I try to extract data from a JSON path. I have tried reinstalling the plugin. I have also tried running it directly via jMeter. In both cases I still have the same problem. Any idea what is causing this error?

2016/06/08 14:34:05 WARN - com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor: Extract failed com.jayway.jsonpath.PathNotFoundException: Extracted array is empty at com.atlantbh.jmeter.plugins.jsonutils.jsonpathextractor.JSONPathExtractor.process(JSONPathExtractor.java:104) at org.apache.jmeter.threads.JMeterThread.runPostProcessors(JMeterThread.java:776) at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:489) at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:410) at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:241) at java.lang.Thread.run(Unknown Source)

Ori Marko
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user3750195
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2 Answers2

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If you use Taurus for quite a while it might be the case it's using previously downloaded JMeter 2.13 which doesn't have JSON Path PostProcessor yet. So the following commands can help:

  1. Upgrade Taurus to the most recent version:

    sudo pip instal --upgrade bzt

  2. Remove previous JMeter installation:

    rm -rf ~/.bzt/jmeter-taurus

  3. Run your test normally - Taurus should download JMeter 3.0

If you don't have possibility to upgrade JMeter and/or Taurus - use JSON Path Extractor plugin instead

Dmitri T
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It turns out my problem was a version mismatch. I downloaded the latest greatest (stable) jMeter when I started working with jMeter about a month ago. About a week after I downloaded jMeter they released 3.0. I didn’t start setting up my perf server until over a week later. When I installed jMeter on the sever it got 3.0, but my Mac had 2.13. So I was trying to run jmx files created with 2.13 on my 3.0 server. I never got any version mismatch errors just stuff like I shared above. After I upgraded my Mac and rewrote my jmx files via 3.0 everything worked fine.

user3750195
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