问题
Problem
When I execute 2 nodes of Firefox with 1 instance each no problem. But if I execute with 3 or more than 3 nodes getting the below error. No Problem if I execute 100 Test cases in chrome but seems Firefox not able to handle so many test cases. I have high config server with 64 GB RAM. I also observed, with 3 nodes the consumption of memory is never goes beyond 70%HUB
java -jar selenium-server-standalone-3.14.0.jar -role hub -browserTimeout 30 -timeout 90
Node
java -Dwebdriver.gecko.driver=./geckodriver.exe -jar selenium-server-standalone-3.14.0.jar -role node -hub http://localhost:4444/grid/register -browser browserName=firefox, -port 7771
Code Snap-1
private WebDriver firefoxDriver() {
WebDriver driver;
driver = null;
try{
System.setProperty("webdriver.gecko.driver",Constants.sFirefoxDriverPath);
FirefoxOptions opt= new FirefoxOptions();
opt.setAcceptInsecureCerts(true);
opt.setCapability("marionette", true);
driver = new RemoteWebDriver(new URL(Constants.sHubUrl), opt);
driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
}catch(Exception ex){
logger.error("Error in Firefox Driver --> " , ex);
driver.close();
}
return driver;
}
Code Snap -2
private WebDriver firefoxDriver() {
WebDriver driver;
driver = null;
try{
System.setProperty("webdriver.gecko.driver",Constants.sFirefoxDriverPath);
DesiredCapabilities cap = DesiredCapabilities.firefox();
cap.setCapability("marionette",true);
cap.setVersion("ANY");
cap.setAcceptInsecureCerts(true);
driver = new RemoteWebDriver(new URL(Constants.sHubUrl), cap);
driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);
}catch(Exception ex){
logger.error("Error in Firefox Driver --> " , ex);
driver.close();
}
return driver;
}
Error Message
org.openqa.selenium.WebDriverException: Session [4c40e39b-ac68-459a-ac33-f77d5f7d57f8] not available and is not among the last 1000 terminated sessions.
Active sessions are[ext. key 6ee03f37-a595-4d82-a0e3-2aed3ff42df5, ext. key 6db69284-3582-4c6a-950b-7ca4e0bbc059, ext. key 5d3d5a41-101e-4bfc-858a-b20ae0e916fb]
Build info: version: '3.14.0', revision: 'aacccce0', time: '2018-08-02T20:19:58.91Z'
System info: host: 'XXXXXX', ip: 'XXX.XX.XXX.XXX', os.name: 'Windows Server 2012 R2', os.arch: 'amd64', os.version: '6.3', java.version: '1.8.0_192'
Driver info: org.openqa.selenium.remote.RemoteWebDriver
Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 63.0.1, javascriptEnabled: true, moz:accessibilityChecks: false, moz:geckodriverVersion: 0.23.0, moz:headless: false, moz:processID: 14432, moz:profile: C:\Users\XXXX\AppData\Local\..., moz:useNonSpecCompliantPointerOrigin: false, moz:webdriverClick: true, pageLoadStrategy: normal, platform: WINDOWS, platformName: WINDOWS, platformVersion: 6.3, rotatable: false, setWindowRect: true, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}, unhandledPromptBehavior: dismiss and notify, webdriver.remote.sessionid: 4c40e39b-ac68-459a-ac33-f77...}
Session ID: 4c40e39b-ac68-459a-ac33-f77d5f7d57f8
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548)
at org.openqa.selenium.remote.RemoteWebDriver$RemoteWebDriverOptions$RemoteTimeouts.implicitlyWait(RemoteWebDriver.java:776)
at com.HCF_AutomationFramework_Selenium.keyWords.kDrivers.firefoxDriver(kDrivers.java:134)
at com.HCF_AutomationFramework_Selenium.keyWords.kDrivers.kSelectDriver(kDrivers.java:42)
at com.Modules.EmailQuote.TestCases.EmailQuote.EmailQuote_Referer_CustomiseCover(EmailQuote.java:93)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:643)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:820)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1128)
at org.testng.internal.TestMethodWorker.invokeTestMethods (TestMethodWorker.java:129)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
回答1:
Some more information about your usecase might have helped us to analyze the issue in a better way. However, you need to take care a couple of facts as follows:
Initiating the Selenium Grid Hub with the following configuration seems insufficient:
-browserTimeout 30 -timeout 90You may consider setting them to the default value os follows:
-browserTimeout 0 -timeout 1800While initiating the Selenium Grid Node you need to provide the absolute path of the GeckoDriver as follows:
java -Dwebdriver.gecko.driver=./geckodriver.exe -jar selenium-server-standalone-3.14.0.jar -role node -hub http://localhost:4444/grid/register -browser browserName=firefox, -port 7771You may consider setting them to the default value as follows:
java -Dwebdriver.gecko.driver=C:/path/to/geckodriver.exe -jar selenium-server-standalone-3.14.0.jar -role node -port 7771 -hub http://localhost:4444/grid/register -browser "browserName=firefox, maxInstances=5, seleniumProtocol=WebDriver"
Additional Consideration
As per the following discussions:
- Session [url] not available and is not among the last 1000 terminated sessions. How to solve this?
- Selenium: Session externalKey not available
It seems this error occurs when:
- Selenium Grid Hub, Selenium Grid Node and the Client Process are initiated/spawned from different versions of Selenium client.
Solution
Ensure that Selenium Grid Hub, Selenium Grid Node and the Client Process all of them uses the same version of Selenium client i.e. Selenium v3.141.59
来源：https://stackoverflow.com/questions/53331029/webdriverexception-session-not-available-and-is-not-among-the-last-1000-termina