This class was introduced in Servlet 3.0. We have in the dependency tree some references to Servlet 2.5 and Servlet 3.0. The latter is a superset of the former. So we standardized on depending on Servlet 3.0.
At least, that seems to have been successful in the Maven build, but this is just evidence that the SBT build ends up including Servlet 2.5 dependencies. You shouldn't have to work around it in this way. Let me see if I can debug and propose the right exclusion for SBT. (Related: is the SBT build going to continue to live separately from Maven, or is it going to be auto-generated? that is -- worth fixing this?) On Wed, May 28, 2014 at 6:08 AM, Kay Ousterhout <k...@eecs.berkeley.edu> wrote: > Hi all, > > I had some trouble compiling an application (Shark) against Spark 1.0, > where Shark had a runtime exception (at the bottom of this message) because > it couldn't find the javax.servlet classes. SBT seemed to have trouble > downloading the servlet APIs that are dependencies of Jetty (used by the > Spark web UI), so I had to manually add them to the application's build > file: > > libraryDependencies += "org.mortbay.jetty" % "servlet-api" % "3.0.20100224" > > Not exactly sure why this happens but thought it might be useful in case > others run into the same problem. > > -Kay > > ------------- > > Exception in thread "main" java.lang.NoClassDefFoundError: > javax/servlet/FilterRegistration > > 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$.createServletHandler(JettyUtils.scala:98) > > at org.apache.spark.ui.JettyUtils$.createServletHandler(JettyUtils.scala:89) > > at org.apache.spark.ui.WebUI.attachPage(WebUI.scala:64) > > at org.apache.spark.ui.WebUI$anonfun$attachTab$1.apply(WebUI.scala:57) > > at org.apache.spark.ui.WebUI$anonfun$attachTab$1.apply(WebUI.scala:57) > > at > scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) > > at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) > > at org.apache.spark.ui.WebUI.attachTab(WebUI.scala:57) > > at org.apache.spark.ui.SparkUI.initialize(SparkUI.scala:66) > > at org.apache.spark.ui.SparkUI.<init>(SparkUI.scala:60) > > at org.apache.spark.ui.SparkUI.<init>(SparkUI.scala:42) > > at org.apache.spark.SparkContext.<init>(SparkContext.scala:222) > > at org.apache.spark.SparkContext.<init>(SparkContext.scala:85) > > at shark.SharkContext.<init>(SharkContext.scala:42) > > at shark.SharkContext.<init>(SharkContext.scala:61) > > at shark.SharkEnv$.initWithSharkContext(SharkEnv.scala:78) > > at shark.SharkEnv$.init(SharkEnv.scala:38) > > at shark.SharkCliDriver.<init>(SharkCliDriver.scala:280) > > at shark.SharkCliDriver$.main(SharkCliDriver.scala:162) > > at shark.SharkCliDriver.main(SharkCliDriver.scala) > > Caused by: java.lang.ClassNotFoundException: > javax.servlet.FilterRegistration > > at java.net.URLClassLoader$1.run(URLClassLoader.java:366) > > 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) > > ... 23 more
