Flaky Test: ZeppelinIT. testAngularRunParagraph ()

Running org.apache.zeppelin.integration.ZeppelinIT
14:46:28,712  INFO org.apache.zeppelin.CommandExecutor:46 - Sending command "bash -c firefox -v" to localhost
14:46:28,914  INFO org.apache.zeppelin.WebDriverManager:59 - Firefox version 31 detected
14:46:28,915  INFO org.apache.zeppelin.WebDriverManager:159 - firebug version: 31, will be downloaded to /tmp/firebug/
14:46:28,915  INFO org.apache.zeppelin.WebDriverManager:177 - Download of firebug version: 31, successful
14:46:32,005  INFO org.apache.zeppelin.ZeppelinITUtils:32 - Starting sleeping for 1 seconds...
14:46:32,005  INFO org.apache.zeppelin.ZeppelinITUtils:33 - Caller: org.apache.zeppelin.AbstractZeppelinIT.clickAndWait(AbstractZeppelinIT.java:132)
14:46:33,005  INFO org.apache.zeppelin.ZeppelinITUtils:41 - Finished.
14:46:33,155  INFO org.apache.zeppelin.ZeppelinITUtils:32 - Starting sleeping for 1 seconds...
14:46:33,155  INFO org.apache.zeppelin.ZeppelinITUtils:33 - Caller: org.apache.zeppelin.AbstractZeppelinIT.clickAndWait(AbstractZeppelinIT.java:132)
14:46:34,155  INFO org.apache.zeppelin.ZeppelinITUtils:41 - Finished.
14:47:08,392 ERROR org.apache.zeppelin.AbstractZeppelinIT:136 - Exception in ZeppelinIT while testAngularRunParagraph
org.openqa.selenium.StaleElementReferenceException: Element not found in the cache - perhaps the page has changed since it was looked up
Command duration or timeout: 30.07 seconds

...
...
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Tests run: 3, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 209.531 sec <<< FAILURE! - in org.apache.zeppelin.integration.ZeppelinIT
testAngularRunParagraph(org.apache.zeppelin.integration.ZeppelinIT)  Time elapsed: 39.986 sec  <<< ERROR!
org.openqa.selenium.StaleElementReferenceException: Element not found in the cache - perhaps the page has changed since it was looked up
Command duration or timeout: 30.07 seconds
For documentation on this error, please visit: http://seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '2.48.2', revision: '41bccdd10cf2c0560f637404c2d96164b67d9d67', time: '2015-10-09 13:08:06'
System info: host: 'testing-docker-195d0a92-0cbd-4dfb-b2ed-df0a2db571f7', ip: '172.17.0.14', os.name: 'Linux', os.arch: 'amd64', os.version: '4.8.12-040812-generic', java.version: '1.7.0_76'
Session ID: c079938b-68e6-4869-895e-bdd263f92155
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{platform=LINUX, acceptSslCerts=true, javascriptEnabled=true, cssSelectorsEnabled=true, databaseEnabled=true, browserName=firefox, handlesAlerts=true, nativeEvents=false, webStorageEnabled=true, rotatable=false, locationContextEnabled=true, applicationCacheEnabled=true, takesScreenshot=true, version=31.0}]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	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:647)
	at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:326)
	at org.openqa.selenium.remote.RemoteWebElement.getText(RemoteWebElement.java:178)
	at org.apache.zeppelin.AbstractZeppelinIT.waitForText(AbstractZeppelinIT.java:84)
	at org.apache.zeppelin.integration.ZeppelinIT.testAngularRunParagraph(ZeppelinIT.java:315)
Caused by: org.openqa.selenium.StaleElementReferenceException: Element not found in the cache - perhaps the page has changed since it was looked up
For documentation on this error, please visit: http://seleniumhq.org/exceptions/stale_element_reference.html
Build info: version: '2.48.2', revision: '41bccdd10cf2c0560f637404c2d96164b67d9d67', time: '2015-10-09 13:08:06'
System info: host: 'testing-docker-195d0a92-0cbd-4dfb-b2ed-df0a2db571f7', ip: '172.17.0.14', os.name: 'Linux', os.arch: 'amd64', os.version: '4.8.12-040812-generic', java.version: '1.7.0_76'
Driver info: driver.version: unknown
	at <anonymous class&gt;.fxdriver.cache.getElementAt(resource://fxdriver/modules/web-element-cache.js:9351)
	at <anonymous class&gt;.Utils.getElementAt(file:///tmp/anonymous7086617116936293686webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:8978)
	at <anonymous class&gt;.WebElement.getElementText(file:///tmp/anonymous7086617116936293686webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:11965)
	at <anonymous class&gt;.DelayedCommand.prototype.executeInternal_/h(file:///tmp/anonymous7086617116936293686webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:12534)
	at <anonymous class&gt;.fxdriver.Timer.prototype.setTimeout/<.notify(file:///tmp/anonymous7086617116936293686webdriver-profile/extensions/fxdriver@googlecode.com/components/command-processor.js:621)


Results :

Tests in error: 
  ZeppelinIT.testAngularRunParagraph:315->AbstractZeppelinIT.waitForText:84 » StaleElementReference

Tests run: 18, Failures: 0, Errors: 1, Skipped: 0