Github user eranwitkon commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/223#issuecomment-132458954 Here is the repro steps: 1) run zeppelin 2) using some REST client call the update settings with the following JSON {"id":"2AVJY1M6F","name":"md","group":"md","properties":{"propname":"propvalue"},"interpreterGroup":[{"class":"org.apache.zeppelin.markdown.Markdown","name":"md"}]} - NOTE that I intentionally omitted the option part 3) Now look at the log file: INFO [2015-08-19 09:14:13,106] ({qtp2095490653-44} InterpreterRestApi.java[updateSetting]:111) - Update interpreterSetting 2AVGGNEKP WARN [2015-08-19 09:14:13,121] ({qtp2095490653-44} LogUtils.java[doLog]:452) - Application { http://rest.zeppelin.apache.org/}NotebookRestApi has thrown exception, unwinding now org.apache.cxf.interceptor.Fault at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:162) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:128) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:192) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:100) at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:57) at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:93) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPut(AbstractHTTPServlet.java:223) at javax.servlet.http.HttpServlet.service(HttpServlet.java:598) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) at org.apache.zeppelin.server.CorsFilter.doFilter(CorsFilter.java:53) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:370) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NullPointerException at org.apache.zeppelin.interpreter.InterpreterFactory.createInterpreterGroup(InterpreterFactory.java:361) at org.apache.zeppelin.interpreter.InterpreterFactory.setPropertyAndRestart(InterpreterFactory.java:515) at org.apache.zeppelin.rest.InterpreterRestApi.updateSetting(InterpreterRestApi.java:116) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96) ... 40 more WARN [2015-08-19 09:14:13,239] ({qtp2095490653-44} PhaseInterceptorChain.java[unwind]:444) - Exception in handleFault on interceptor org.apache.cxf.binding.xml.interceptor.XMLFaultOutInterceptor@51637100 org.apache.cxf.interceptor.Fault at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:162) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:128) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:192) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:100) at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:57) at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:93) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPut(AbstractHTTPServlet.java:223) at javax.servlet.http.HttpServlet.service(HttpServlet.java:598) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) at org.apache.zeppelin.server.CorsFilter.doFilter(CorsFilter.java:53) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:370) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NullPointerException at org.apache.zeppelin.interpreter.InterpreterFactory.createInterpreterGroup(InterpreterFactory.java:361) at org.apache.zeppelin.interpreter.InterpreterFactory.setPropertyAndRestart(InterpreterFactory.java:515) at org.apache.zeppelin.rest.InterpreterRestApi.updateSetting(InterpreterRestApi.java:116) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96) ... 40 more ERROR [2015-08-19 09:14:13,242] ({qtp2095490653-44} AbstractFaultChainInitiatorObserver.java[onMessage]:115) - Error occurred during error handling, give up! org.apache.cxf.interceptor.Fault at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:162) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:128) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:192) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:100) at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:57) at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:93) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPut(AbstractHTTPServlet.java:223) at javax.servlet.http.HttpServlet.service(HttpServlet.java:598) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) at org.apache.zeppelin.server.CorsFilter.doFilter(CorsFilter.java:53) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:370) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.NullPointerException at org.apache.zeppelin.interpreter.InterpreterFactory.createInterpreterGroup(InterpreterFactory.java:361) at org.apache.zeppelin.interpreter.InterpreterFactory.setPropertyAndRestart(InterpreterFactory.java:515) at org.apache.zeppelin.rest.InterpreterRestApi.updateSetting(InterpreterRestApi.java:116) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96) ... 40 more WARN [2015-08-19 09:14:13,245] ({qtp2095490653-44} ServletHandler.java[doHandle]:561) - /api/interpreter/setting/2AVGGNEKP java.lang.RuntimeException: org.apache.cxf.interceptor.Fault at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:116) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:333) at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239) at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222) at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153) at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPut(AbstractHTTPServlet.java:223) at javax.servlet.http.HttpServlet.service(HttpServlet.java:598) at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) at org.apache.zeppelin.server.CorsFilter.doFilter(CorsFilter.java:53) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1467) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) at org.eclipse.jetty.server.Server.handle(Server.java:370) at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494) at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982) at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043) at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865) at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240) at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:667) at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) at java.lang.Thread.run(Thread.java:745) Caused by: org.apache.cxf.interceptor.Fault at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:162) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:128) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:192) at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:100) at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:57) at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:93) at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272) ... 35 more Caused by:* java.lang.NullPointerException* at org.apache.zeppelin.interpreter.InterpreterFactory.createInterpreterGroup(InterpreterFactory.java:361) at org.apache.zeppelin.interpreter.InterpreterFactory.setPropertyAndRestart(InterpreterFactory.java:515) at org.apache.zeppelin.rest.InterpreterRestApi.updateSetting(InterpreterRestApi.java:116) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:180) at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96) ... 40 more This is because we are trying to access the option variable when it is NULL Eran On Wed, Aug 19, 2015 at 2:26 AM Felix Cheung <notificati...@github.com> wrote: > I didn't quite get, what was the root cause of the NPE? > > â > Reply to this email directly or view it on GitHub > <https://github.com/apache/incubator-zeppelin/pull/223#issuecomment-132389778> > . >
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---