com.fasterxml.jackson.core.JsonGenerationException: Split surrogate on writeRaw() input (last character)
        at com.fasterxml.jackson.core.JsonGenerator._reportError(JsonGenerator.java:1489)
        at com.fasterxml.jackson.core.json.UTF8JsonGenerator._outputRawMultiByteChar(UTF8JsonGenerator.java:1746)
        at com.fasterxml.jackson.core.json.UTF8JsonGenerator._writeSegmentedRaw(UTF8JsonGenerator.java:692)
        at com.fasterxml.jackson.core.json.UTF8JsonGenerator.writeRaw(UTF8JsonGenerator.java:606)
        at com.fasterxml.jackson.core.json.UTF8JsonGenerator.writeRaw(UTF8JsonGenerator.java:565)
        at com.fasterxml.jackson.core.base.GeneratorBase.writeRawValue(GeneratorBase.java:224)
        at com.fasterxml.jackson.databind.ser.std.RawSerializer.serialize(RawSerializer.java:32)
        at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:505)
        at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:639)
        at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152)
        at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:128)
        at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:2881)
        at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsBytes(ObjectMapper.java:2362)
        at com.cloudera.livy.server.JsonServlet.toJson(JsonServlet.scala:138)
        at com.cloudera.livy.server.JsonServlet.renderResponseBody(JsonServlet.scala:95)
        at org.scalatra.ScalatraBase$class.renderResponse(ScalatraBase.scala:367)
        at com.cloudera.livy.server.JsonServlet.org$scalatra$FutureSupport$$super$renderResponse(JsonServlet.scala:40)
        at org.scalatra.FutureSupport$class.renderResponse(FutureSupport.scala:44)
        at com.cloudera.livy.server.JsonServlet.renderResponse(JsonServlet.scala:40)
        at org.scalatra.ScalatraBase$class.executeRoutes(ScalatraBase.scala:189)
        at org.scalatra.ScalatraServlet.executeRoutes(ScalatraServlet.scala:49)
        at org.scalatra.ScalatraBase$$anonfun$handle$1.apply$mcV$sp(ScalatraBase.scala:113)
        at org.scalatra.ScalatraBase$$anonfun$handle$1.apply(ScalatraBase.scala:113)
        at org.scalatra.ScalatraBase$$anonfun$handle$1.apply(ScalatraBase.scala:113)
        at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
        at org.scalatra.DynamicScope$class.withResponse(DynamicScope.scala:80)
        at org.scalatra.ScalatraServlet.withResponse(ScalatraServlet.scala:49)
        at org.scalatra.DynamicScope$$anonfun$withRequestResponse$1.apply(DynamicScope.scala:60)
        at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
        at org.scalatra.DynamicScope$class.withRequest(DynamicScope.scala:71)
        at org.scalatra.ScalatraServlet.withRequest(ScalatraServlet.scala:49)
        at org.scalatra.DynamicScope$class.withRequestResponse(DynamicScope.scala:59)
        at org.scalatra.ScalatraServlet.withRequestResponse(ScalatraServlet.scala:49)
        at org.scalatra.ScalatraBase$class.handle(ScalatraBase.scala:111)
        at org.scalatra.ScalatraServlet.org$scalatra$servlet$ServletBase$$super$handle(ScalatraServlet.scala:49)
        at org.scalatra.servlet.ServletBase$class.handle(ServletBase.scala:43)
        at com.cloudera.livy.server.SessionServlet.org$scalatra$MethodOverride$$super$handle(SessionServlet.scala:40)
        at org.scalatra.MethodOverride$class.handle(MethodOverride.scala:28)
        at com.cloudera.livy.server.SessionServlet.org$scalatra$GZipSupport$$super$handle(SessionServlet.scala:40)
        at org.scalatra.GZipSupport$$anonfun$handle$1.apply$mcV$sp(GZipSupport.scala:34)
        at org.scalatra.GZipSupport$$anonfun$handle$1.apply(GZipSupport.scala:19)
        at org.scalatra.GZipSupport$$anonfun$handle$1.apply(GZipSupport.scala:19)
        at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
        at org.scalatra.DynamicScope$class.withResponse(DynamicScope.scala:80)
        at org.scalatra.ScalatraServlet.withResponse(ScalatraServlet.scala:49)
        at org.scalatra.DynamicScope$$anonfun$withRequestResponse$1.apply(DynamicScope.scala:60)
        at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
        at org.scalatra.DynamicScope$class.withRequest(DynamicScope.scala:71)
        at org.scalatra.ScalatraServlet.withRequest(ScalatraServlet.scala:49)
        at org.scalatra.DynamicScope$class.withRequestResponse(DynamicScope.scala:59)
        at org.scalatra.ScalatraServlet.withRequestResponse(ScalatraServlet.scala:49)
        at org.scalatra.GZipSupport$class.handle(GZipSupport.scala:18)
        at com.cloudera.livy.server.interactive.InteractiveSessionServlet.org$scalatra$servlet$FileUploadSupport$$super$handle(InteractiveSessionServlet.scala:42)
        at org.scalatra.servlet.FileUploadSupport$class.handle(FileUploadSupport.scala:93)
        at com.cloudera.livy.server.interactive.InteractiveSessionServlet.handle(InteractiveSessionServlet.scala:42)
        at org.scalatra.ScalatraServlet.service(ScalatraServlet.scala:54)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
        at com.cloudera.livy.server.CsrfFilter.doFilter(CsrfFilter.scala:44)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:617)
        at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:576)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
        at org.eclipse.jetty.server.Server.handle(Server.java:499)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
        at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
        at java.lang.Thread.run(Thread.java:748)