val tweets = sqlContext.read.json("hdfs://sandbox.hortonworks.com:8020/social/twitter") This is a directory of JSON files, with much less and flatter Twitter schema then the full twitter schema listed below. This may have been the schema the first time I ran it a few days ago. Do I need to restart Spark History? Yarn? Server? This is on the HDP 2.4 sandbox This was run on the sandbox as: spark-submit --class com.dataflowdeveloper.sentiment.TwitterSentimentAnalysis --master yarn-client sentiment.jar --verbose Error: 16/08/16 16:37:13 INFO FileInputFormat: Total input paths to process : 14635 root |-- contributors: string (nullable = true) |-- coordinates: string (nullable = true) |-- created_at: string (nullable = true) |-- entities: struct (nullable = true) | |-- hashtags: array (nullable = true) | | |-- element: struct (containsNull = true) | | | |-- indices: array (nullable = true) | | | | |-- element: long (containsNull = true) | | | |-- text: string (nullable = true) | |-- media: array (nullable = true) | | |-- element: struct (containsNull = true) | | | |-- display_url: string (nullable = true) | | | |-- expanded_url: string (nullable = true) | | | |-- id: long (nullable = true) | | | |-- id_str: string (nullable = true) | | | |-- indices: array (nullable = true) | | | | |-- element: long (containsNull = true) | | | |-- media_url: string (nullable = true) | | | |-- media_url_https: string (nullable = true) | | | |-- sizes: struct (nullable = true) | | | | |-- large: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | | |-- medium: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | | |-- small: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | | |-- thumb: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | |-- type: string (nullable = true) | | | |-- url: string (nullable = true) | |-- symbols: array (nullable = true) | | |-- element: string (containsNull = true) | |-- urls: array (nullable = true) | | |-- element: string (containsNull = true) | |-- user_mentions: array (nullable = true) | | |-- element: string (containsNull = true) |-- extended_entities: struct (nullable = true) | |-- media: array (nullable = true) | | |-- element: struct (containsNull = true) | | | |-- display_url: string (nullable = true) | | | |-- expanded_url: string (nullable = true) | | | |-- id: long (nullable = true) | | | |-- id_str: string (nullable = true) | | | |-- indices: array (nullable = true) | | | | |-- element: long (containsNull = true) | | | |-- media_url: string (nullable = true) | | | |-- media_url_https: string (nullable = true) | | | |-- sizes: struct (nullable = true) | | | | |-- large: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | | |-- medium: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | | |-- small: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | | |-- thumb: struct (nullable = true) | | | | | |-- h: long (nullable = true) | | | | | |-- resize: string (nullable = true) | | | | | |-- w: long (nullable = true) | | | |-- type: string (nullable = true) | | | |-- url: string (nullable = true) |-- favorite_count: long (nullable = true) |-- favorited: boolean (nullable = true) |-- filter_level: string (nullable = true) |-- followers_count: string (nullable = true) |-- friends_count: string (nullable = true) |-- geo: string (nullable = true) |-- handle: string (nullable = true) |-- hashtags: string (nullable = true) |-- id: long (nullable = true) |-- id_str: string (nullable = true) |-- in_reply_to_screen_name: string (nullable = true) |-- in_reply_to_status_id: string (nullable = true) |-- in_reply_to_status_id_str: string (nullable = true) |-- in_reply_to_user_id: string (nullable = true) |-- in_reply_to_user_id_str: string (nullable = true) |-- is_quote_status: boolean (nullable = true) |-- lang: string (nullable = true) |-- language: string (nullable = true) |-- location: string (nullable = true) |-- msg: string (nullable = true) |-- place: string (nullable = true) |-- possibly_sensitive: boolean (nullable = true) |-- profile_image_url: string (nullable = true) |-- retweet_count: string (nullable = true) |-- retweeted: boolean (nullable = true) |-- sentiment: string (nullable = true) |-- source: string (nullable = true) |-- tag: string (nullable = true) |-- text: string (nullable = true) |-- time: string (nullable = true) |-- time_zone: string (nullable = true) |-- timestamp_ms: string (nullable = true) |-- truncated: boolean (nullable = true) |-- tweet_id: string (nullable = true) |-- unixtime: string (nullable = true) |-- user: struct (nullable = true) | |-- contributors_enabled: boolean (nullable = true) | |-- created_at: string (nullable = true) | |-- default_profile: boolean (nullable = true) | |-- default_profile_image: boolean (nullable = true) | |-- description: string (nullable = true) | |-- favourites_count: long (nullable = true) | |-- follow_request_sent: string (nullable = true) | |-- followers_count: long (nullable = true) | |-- following: string (nullable = true) | |-- friends_count: long (nullable = true) | |-- geo_enabled: boolean (nullable = true) | |-- id: long (nullable = true) | |-- id_str: string (nullable = true) | |-- is_translator: boolean (nullable = true) | |-- lang: string (nullable = true) | |-- listed_count: long (nullable = true) | |-- location: string (nullable = true) | |-- name: string (nullable = true) | |-- notifications: string (nullable = true) | |-- profile_background_color: string (nullable = true) | |-- profile_background_image_url: string (nullable = true) | |-- profile_background_image_url_https: string (nullable = true) | |-- profile_background_tile: boolean (nullable = true) | |-- profile_banner_url: string (nullable = true) | |-- profile_image_url: string (nullable = true) | |-- profile_image_url_https: string (nullable = true) | |-- profile_link_color: string (nullable = true) | |-- profile_sidebar_border_color: string (nullable = true) | |-- profile_sidebar_fill_color: string (nullable = true) | |-- profile_text_color: string (nullable = true) | |-- profile_use_background_image: boolean (nullable = true) | |-- protected: boolean (nullable = true) | |-- screen_name: string (nullable = true) | |-- statuses_count: long (nullable = true) | |-- time_zone: string (nullable = true) | |-- url: string (nullable = true) | |-- utc_offset: long (nullable = true) | |-- verified: boolean (nullable = true) |-- user_name: string (nullable = true) ... 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It's easy to export flows in NiFi 0.70, but in NiFi 1.0.0 it crashed and doesn't save my flow. I tried a few ways, rebooted, restarted and checked logs. Nothing unusual. An unexpected error has occurred home An unexpected error has occurred. Please check the logs for additional details. This may be the log: 2016-08-15 23:09:10,384 INFO [NiFi Web Server-90221] org.apache.nifi.web.filter.RequestLogger Attempting request for (anonymous) POST http://localhost:8090/nifi-api/process-groups/7b75a996-0156-1000-c5cc-abbd38bff2e0/templates (source ip: 10.0.2.2) 2016-08-15 23:09:10,439 ERROR [NiFi Web Server-90221] o.a.nifi.web.api.config.ThrowableMapper An unexpected error has occurred: java.lang.NullPointerException. Returning Internal Server Error response. java.lang.NullPointerException: null at java.util.UUID.fromString(UUID.java:192) ~[na:1.8.0_91] at org.apache.nifi.web.api.dto.FlowSnippetDTO.removeInstanceIdentifierIfNecessary(FlowSnippetDTO.java:233) ~[nifi-client-dto-1.0.0-BETA.jar:1.0.0-BETA] at org.apache.nifi.web.api.dto.FlowSnippetDTO.removeInstanceIdentifierIfNecessary(FlowSnippetDTO.java:282) ~[nifi-client-dto-1.0.0-BETA.jar:1.0.0-BETA] at org.apache.nifi.web.api.dto.FlowSnippetDTO.setProcessGroups(FlowSnippetDTO.java:142) ~[nifi-client-dto-1.0.0-BETA.jar:1.0.0-BETA] at org.apache.nifi.web.util.SnippetUtils.populateFlowSnippet(SnippetUtils.java:236) ~[classes/:na] at org.apache.nifi.web.StandardNiFiServiceFacade.createTemplate(StandardNiFiServiceFacade.java:1530) ~[classes/:1.0.0-BETA] at org.apache.nifi.web.StandardNiFiServiceFacade$FastClassBySpringCGLIB$358780e0.invoke(<generated>) ~[classes/:1.0.0-BETA] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.apache.nifi.web.NiFiServiceFacadeLock.createLock(NiFiServiceFacadeLock.java:41) ~[classes/:1.0.0-BETA] at sun.reflect.GeneratedMethodAccessor469.invoke(Unknown Source) ~[na:na] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_91] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_91] at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:68) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655) ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.apache.nifi.web.StandardNiFiServiceFacade$EnhancerBySpringCGLIB$34f7167b.createTemplate(<generated>) ~[classes/:1.0.0-BETA] at org.apache.nifi.web.api.ProcessGroupResource.createTemplate(ProcessGroupResource.java:1875) ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_91] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_91] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_91] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_91] at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) ~[jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) [jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473) [jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) [jersey-server-1.19.jar:1.19] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) [jersey-server-1.19.jar:1.19] at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) [jersey-servlet-1.19.jar:1.19] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558) [jersey-servlet-1.19.jar:1.19] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733) [jersey-servlet-1.19.jar:1.19] at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [javax.servlet-api-3.1.0.jar:3.1.0] at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:845) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1689) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:51) [jetty-servlets-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1676) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.apache.nifi.web.filter.RequestLogger.doFilter(RequestLogger.java:66) [classes/:na] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1676) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:83) [nifi-web-security-1.0.0-BETA.jar:1.0.0-BETA] at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:57) [nifi-web-security-1.0.0-BETA.jar:1.0.0-BETA] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:83) [nifi-web-security-1.0.0-BETA.jar:1.0.0-BETA] at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:57) [nifi-web-security-1.0.0-BETA.jar:1.0.0-BETA] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:83) [nifi-web-security-1.0.0-BETA.jar:1.0.0-BETA] at org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:57) [nifi-web-security-1.0.0-BETA.jar:1.0.0-BETA] at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176) [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE] at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) [spring-web-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) [spring-web-4.2.4.RELEASE.jar:4.2.4.RELEASE] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1676) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.apache.nifi.web.filter.TimerFilter.doFilter(TimerFilter.java:51) [classes/:na] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) [jetty-security-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1174) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511) [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1106) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.Server.handle(Server.java:524) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:319) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:253) [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273) [jetty-io-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) [jetty-io-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) [jetty-io-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303) [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148) [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136) [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671) [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589) [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517] at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91] ... 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