Servlet classes signer information does not match [Spark branch]

2014-11-18 02:36:04,168 DEBUG spark.HttpFileServer (Logging.scala:logDebug(63)) - HTTP file server started at: http://10.203.137.143:46436
2014-11-18 02:36:04,172 ERROR session.TestSparkSessionManagerImpl (TestSparkSessionManagerImpl.java:run(127)) - Error executing 'Session thread 5'
org.apache.hadoop.hive.ql.metadata.HiveException: Failed to create spark client.
	at org.apache.hadoop.hive.ql.exec.spark.session.SparkSessionImpl.open(SparkSessionImpl.java:55)
	at org.apache.hadoop.hive.ql.exec.spark.session.SparkSessionManagerImpl.getSession(SparkSessionManagerImpl.java:122)
	at org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl$SessionThread.run(TestSparkSessionManagerImpl.java:112)
	at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.SecurityException: class "javax.servlet.FilterRegistration"'s signer information does not match signer information of other classes in the same package
	at java.lang.ClassLoader.checkCerts(ClassLoader.java:952)
	at java.lang.ClassLoader.preDefineClass(ClassLoader.java:666)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:794)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	at org.eclipse.jetty.servlet.ServletContextHandler.<init>(ServletContextHandler.java:136)
	at org.eclipse.jetty.servlet.ServletContextHandler.<init>(ServletContextHandler.java:129)
	at org.eclipse.jetty.servlet.ServletContextHandler.<init>(ServletContextHandler.java:98)
	at org.apache.spark.ui.JettyUtils$.createServletHandler(JettyUtils.scala:96)
	at org.apache.spark.ui.JettyUtils$.createServletHandler(JettyUtils.scala:87)
	at org.apache.spark.ui.WebUI.attachPage(WebUI.scala:67)
	at org.apache.spark.ui.WebUI$$anonfun$attachTab$1.apply(WebUI.scala:60)
	at org.apache.spark.ui.WebUI$$anonfun$attachTab$1.apply(WebUI.scala:60)
	at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
	at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
	at org.apache.spark.ui.WebUI.attachTab(WebUI.scala:60)
	at org.apache.spark.ui.SparkUI.initialize(SparkUI.scala:49)
	at org.apache.spark.ui.SparkUI.<init>(SparkUI.scala:60)
	at org.apache.spark.ui.SparkUI$.create(SparkUI.scala:150)
	at org.apache.spark.ui.SparkUI$.createLiveUI(SparkUI.scala:105)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:237)
	at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:58)
	at org.apache.hadoop.hive.ql.exec.spark.LocalHiveSparkClient.<init>(LocalHiveSparkClient.java:107)
	at org.apache.hadoop.hive.ql.exec.spark.LocalHiveSparkClient.getInstance(LocalHiveSparkClient.java:69)
	at org.apache.hadoop.hive.ql.exec.spark.HiveSparkClientFactory.createHiveSparkClient(HiveSparkClientFactory.java:52)
	at org.apache.hadoop.hive.ql.exec.spark.session.SparkSessionImpl.open(SparkSessionImpl.java:53)
	... 3 more