Fix random webdriver test error on ITDevJSFHotReloadTest.testCreateStudioDocument

18:20:09,398 INFO  [LogTestWatchman] Starting test 'org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase#testCreateStudioDocument'
18:20:21,430 ERROR [LogTestWatchman] Test 'org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase#testCreateStudioDocument' failed
org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"link text","selector":"My test document"}
Command duration or timeout: 236 milliseconds
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '2.53.0', revision: '35ae25b1534ae328c771e0856c93e187490ca824', time: '2016-03-15 10:43:46'
System info: host: '23357d144ee2', ip: '172.17.0.10', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-92-generic', java.version: '1.8.0_77'
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{applicationCacheEnabled=true, rotatable=false, handlesAlerts=true, databaseEnabled=true, version=42.0, platform=LINUX, nativeEvents=false, acceptSslCerts=true, webStorageEnabled=true, locationContextEnabled=true, browserName=firefox, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true}]
Session ID: 20a8b5fd-7289-4c3b-bcfc-b02284780076
*** Element info: {Using=link text, value=My test document}
	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.ErrorHandler.createThrowable(ErrorHandler.java:206)
	at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
	at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:678)
	at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:327)
	at org.openqa.selenium.remote.RemoteWebElement.findElement(RemoteWebElement.java:198)
	at org.openqa.selenium.remote.RemoteWebElement.findElementByLinkText(RemoteWebElement.java:247)
	at org.openqa.selenium.By$ByLinkText.findElement(By.java:246)
	at org.openqa.selenium.remote.RemoteWebElement.findElement(RemoteWebElement.java:194)
	at org.nuxeo.functionaltests.pages.tabs.ContentTabSubPage.getDocumentCreatePage(ContentTabSubPage.java:111)
	at org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase.testCreateStudioDocument(NuxeoITCase.java:80)
	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$BeforeMethodRunStatement.evaluate(FeaturesRunner.java:285)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$BeforeSetupStatement.evaluate(FeaturesRunner.java:301)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$AfterMethodRunStatement.evaluate(FeaturesRunner.java:332)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$AfterTeardownStatement.evaluate(FeaturesRunner.java:351)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$RulesFactory$1.evaluate(FeaturesRunner.java:429)
	at org.nuxeo.functionaltests.LogTestWatchman$1.evaluate(LogTestWatchman.java:95)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$AfterClassStatement.evaluate(FeaturesRunner.java:235)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$RulesFactory$1.evaluate(FeaturesRunner.java:429)
	at org.nuxeo.runtime.test.runner.FeaturesRunner$BeforeClassStatement.evaluate(FeaturesRunner.java:218)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runners.Suite.runChild(Suite.java:127)
	at org.junit.runners.Suite.runChild(Suite.java:26)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:138)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:113)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:85)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:54)
	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:134)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"link text","selector":"My test document"}
For documentation on this error, please visit: http://seleniumhq.org/exceptions/no_such_element.html
Build info: version: '2.53.0', revision: '35ae25b1534ae328c771e0856c93e187490ca824', time: '2016-03-15 10:43:46'
System info: host: '23357d144ee2', ip: '172.17.0.10', os.name: 'Linux', os.arch: 'amd64', os.version: '4.4.0-92-generic', java.version: '1.8.0_77'
Driver info: driver.version: unknown
	at <anonymous class&gt;.FirefoxDriver.prototype.findElementInternal_(file:///tmp/anonymous8614170530856380992webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:10770)
	at <anonymous class&gt;.fxdriver.Timer.prototype.setTimeout/<.notify(file:///tmp/anonymous8614170530856380992webdriver-profile/extensions/fxdriver@googlecode.com/components/driver-component.js:625)
18:20:21,755 INFO  [LogTestWatchman] Created screenshot file named '/opt/jenkins/workspace/master/FT-nuxeo-master-webdriver-cap-tomcat-hotreload/nuxeo-distribution/nuxeo-jsf-ui-hotreload-tests/target/screenshot-lastpage-org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase-testCreateStudioDocument4033930392280218185.png'
18:20:21,755 INFO  [LogTestWatchman] Created page source file named '/opt/jenkins/workspace/master/FT-nuxeo-master-webdriver-cap-tomcat-hotreload/nuxeo-distribution/nuxeo-jsf-ui-hotreload-tests/target/screenshot-lastpage-org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase-testCreateStudioDocument3582433305011221807.html'
18:20:21,755 INFO  [LogTestWatchman] Finished test 'org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase#testCreateStudioDocument'

2017-08-25 18:20:09,425 WARN  [http-bio-0.0.0.0-8080-exec-10] [org.nuxeo.ecm.platform.ui.web.restAPI.SystemLogRestlet] ----- WebDriver: Starting test 'org.nuxeo.ftest.jsf.hotreload.studio.NuxeoITCase#testCreateStudioDocument'
2017-08-25 18:20:11,605 INFO  [http-bio-0.0.0.0-8080-exec-18] [org.nuxeo.runtime.reload.ReloadComponent] Flush caches
2017-08-25 18:20:11,612 ERROR [http-bio-0.0.0.0-8080-exec-18] [org.nuxeo.runtime.tomcat.dev.DevFrameworkBootstrap] Failed to deploy dev bundles
java.lang.reflect.InvocationTargetException
	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.nuxeo.runtime.tomcat.dev.ReloadServiceInvoker.flush(ReloadServiceInvoker.java:167)
	at org.nuxeo.runtime.tomcat.dev.ReloadServiceInvoker.hotDeployBundles(ReloadServiceInvoker.java:95)
	at org.nuxeo.runtime.tomcat.dev.DevFrameworkBootstrap.reloadDevBundles(DevFrameworkBootstrap.java:199)
	at org.nuxeo.runtime.tomcat.dev.DevFrameworkBootstrap.loadDevBundles(DevFrameworkBootstrap.java:167)
	at org.nuxeo.runtime.tomcat.dev.DevValve.postReload(DevValve.java:142)
	at org.nuxeo.runtime.tomcat.dev.DevValve.invoke(DevValve.java:62)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
	at org.nuxeo.ecm.directory.DirectoryCache.invalidateAll(DirectoryCache.java:174)
	at org.nuxeo.ecm.directory.DirectoryCacheFlusher.handleEvent(DirectoryCacheFlusher.java:54)
	at org.nuxeo.runtime.services.event.EventService.sendEvent(EventService.java:126)
	at org.nuxeo.runtime.services.event.EventService.sendEvent(EventService.java:100)
	at org.nuxeo.runtime.reload.ReloadComponent.flush(ReloadComponent.java:155)
	... 22 more
2017-08-25 18:20:17,774 INFO  [http-bio-0.0.0.0-8080-exec-17] [org.nuxeo.runtime.reload.ReloadComponent] Before undeploy bundles