fire fox config for web sampler (jmeter) is not working - performance

Question

Please help. My web driver sampler for jmeter is not working. Im using firefox config.
2019-07-12 20:55:38,913 ERROR o.a.j.t.JMeterThread: Error calling threadStarted
java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver. The latest version can be downloaded from https://github.com/mozilla/geckodriver/releases
at com.google.common.base.Preconditions.checkState(Preconditions.java:843) ~[guava-28.0.jar:?]
at org.openqa.selenium.remote.service.DriverService.findExecutable(DriverService.java:125) ~[selenium-remote-driver-3.14.0.jar:?]
at org.openqa.selenium.firefox.GeckoDriverService.access$100(GeckoDriverService.java:43) ~[selenium-firefox-driver-3.14.0.jar:?]
at org.openqa.selenium.firefox.GeckoDriverService$Builder.findDefaultExecutable(GeckoDriverService.java:168) ~[selenium-firefox-driver-3.14.0.jar:?]
at org.openqa.selenium.remote.service.DriverService$Builder.build(DriverService.java:346) ~[selenium-remote-driver-3.14.0.jar:?]
at com.googlecode.jmeter.plugins.webdriver.config.FirefoxDriverConfig.createBrowser(FirefoxDriverConfig.java:99) ~[jmeter-plugins-webdriver-3.0.jar:?]
at com.googlecode.jmeter.plugins.webdriver.config.FirefoxDriverConfig.createBrowser(FirefoxDriverConfig.java:22) ~[jmeter-plugins-webdriver-3.0.jar:?]
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.getPreparedBrowser(WebDriverConfig.java:233) ~[jmeter-plugins-webdriver-3.0.jar:?]
at com.googlecode.jmeter.plugins.webdriver.config.WebDriverConfig.threadStarted(WebDriverConfig.java:220) ~[jmeter-plugins-webdriver-3.0.jar:?]
at org.apache.jmeter.threads.JMeterThread$ThreadListenerTraverser.addNode(JMeterThread.java:762) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jorphan.collections.HashTree.traverseInto(HashTree.java:994) [jorphan.jar:5.1.1 r1855137]
at org.apache.jorphan.collections.HashTree.traverse(HashTree.java:977) [jorphan.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.threadStarted(JMeterThread.java:730) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.initRun(JMeterThread.java:718) [ApacheJMeter_core.jar:5.1.1 r1855137]
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:249) [ApacheJMeter_core.jar:5.1.1 r1855137]
at java.lang.Thread.run(Thread.java:835) [?:?]

Answer 1

The path to the driver executable must be set by the webdriver.gecko.driver system property;
You need to:
Download geckodriver
Define webdriver.gecko.driver Java system property. In case of JMeter it can be done in 2 ways:
pass the location of the geckodriver binary via -D command-line argument:
jmeter -Dwebdriver.gecko.driver=/path/to/geckodriver.binary
or if you want to make the change permanent - add the next line to system.properties file (lives in "bin" folder of your JMeter installation)
webdriver.gecko.driver=/path/to/geckodriver.binary
JMeter restart will be required to pick the property up
References:
Overriding Properties Via The Command Line
Apache JMeter Properties Customization Guide