Please add properties in your interpreter-setting.json. But I think this
is some sort of bug that we should fix, we should allow properties to be
not specified.
[
{
"group": "geo",
"name": "geo",
"className": "adrax.GeoInterpreter",
"editor": {
"language": "java",
"editOnDblClick": false,
"completionKey": "TAB"
},
properties: {
}
}
]
Xun Liu <neliu...@163.com> 于2019年1月23日周三 下午5:08写道：
> hi，Никита Терлыч
>
> This is the exception when the interpreter process is initialized because
> a value is a null pointer.
>
> You can solve it by the following methods:
> 1） You can set it in zeppelin/conf/zeppelin-env.sh
> Export
> ZEPPELIN_JAVA_OPTS="-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=15005
> "
>
> 2）Restart zeppelin/bin/zeppelin-daemon.sh restart
> 3）Set up remote debugging in IDEA, debug port 15005, and set breakpoints
> in 405 lines of code in
> `zeppelin/zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/InterpreterSettingManager.java`.
> Check out what caused the null pointer to solve the problem.
>
>
> 在 2019年1月23日，下午4:09，Никита Терлыч <terlychnik...@gmail.com> 写道：
>
> Greetings,
>
>
> I am working on notebook for specific database and I decided to use Apache
> Zeppelin as a base, so I started with creating the most basic interpreter
> for it.
>
> I used this piece of documentation:
> https://zeppelin.apache.org/docs/latest/development/writing_zeppelin_interpreter.html
> .
>
> Thus, I created my class which inherits
> org.apache.zeppelin.interpreter.Interpreter class:
> import org.apache.zeppelin.interpreter.Interpreter;
> import org.apache.zeppelin.interpreter.InterpreterContext;
> import org.apache.zeppelin.interpreter.InterpreterException;
> import org.apache.zeppelin.interpreter.InterpreterResult;
> import org.apache.zeppelin.interpreter.InterpreterResult.Code;
> import org.apache.zeppelin.interpreter.InterpreterResult.Type;
> import java.util.Properties;
>
>
> public class GeoInterpreter extends Interpreter {
>
>
> public GeoInterpreter(Properties properties) {
> super(properties);
> }
>
>
> public void open() throws InterpreterException {
>
>
> }
>
>
> public void close() throws InterpreterException {
>
>
> }
>
>
> public InterpreterResult interpret(String s, InterpreterContext
> interpreterContext) throwsInterpreterException {
> return new InterpreterResult(Code.SUCCESS, Type.TEXT, s);
> }
>
>
> public void cancel(InterpreterContext interpreterContext) throws
> InterpreterException {
>
>
> }
>
>
> public FormType getFormType() throws InterpreterException {
> return null;
> }
>
>
> public int getProgress(InterpreterContext interpreterContext) throws
> InterpreterException {
> return 0;
> }
> }
>
> After that I configured pom.xml file for my interpreter as it was shown in
> documentation.
>
> The pom.xml file:
> <?xml version="1.0" encoding="UTF-8"?>
> <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi="
> http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
> http://maven.apache.org/maven-v4_0_0.xsd";>
> <modelVersion>4.0.0</modelVersion>
>
>
> <groupId>adrax</groupId>
> <artifactId>geo-interpreter</artifactId>
> <version>0.8.0</version>
> <parent>
> <artifactId>interpreter-parent</artifactId>
> <groupId>org.apache.zeppelin</groupId>
> <version>0.8.0</version>
> <relativePath>../interpreter-parent</relativePath>
> </parent>
>
>
> <dependencies>
> <dependency>
> <groupId>org.apache.zeppelin</groupId>
> <artifactId>zeppelin-interpreter</artifactId>
> <version>${project.version}</version>
> <scope>provided</scope>
> </dependency>
> </dependencies>
> <build>
> <plugins>
> <plugin>
> <artifactId>maven-enforcer-plugin</artifactId>
> </plugin>
> <plugin>
> <artifactId>maven-dependency-plugin</artifactId>
> </plugin>
> <plugin>
> <artifactId>maven-resources-plugin</artifactId>
> </plugin>
> </plugins>
> </build>
>
>
> </project>
>
>
> Next, I created “zeppelin-site.xml” from template added my interpreter to
> “zeppelin.interpreters” property like this:
> . . .
> <property>
> <name>zeppelin.interpreters</name>
> <value>…,adrax.GeoInterpreter</value>
> </property>
> . . .
>
> Then I put interpreter’s jar with “interpreter-setting.json” to
> “interpreter” folder.
>
> My interpreter-setting.json:
> [
> {
> "group": "geo",
> "name": "geo",
> "className": "adrax.GeoInterpreter",
> "editor": {
> "language": "java",
> "editOnDblClick": false,
> "completionKey": "TAB"
> }
> }
> ]
>
>
> Finally, I tried to run Zeppelin (zeppelin.cmd) with my interpreter and
> got several errors, the whole server log:
>
> Java HotSpot(TM) 64-Bit Server VM warning: ignoring option
> MaxPermSize=512m; support was removed in 8.0
>
> SLF4J: Class path contains multiple SLF4J bindings.
>
> SLF4J: Found binding in
> [jar:file:/C:/Users/Admin/Documents/Development/Java/Geonotebook/zeppelin-0.8.0-bin-netinst/lib/interpreter/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>
> SLF4J: Found binding in
> [jar:file:/C:/Users/Admin/Documents/Development/Java/Geonotebook/zeppelin-0.8.0-bin-netinst/lib/slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>
> SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
> explanation.
>
> SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
>
> INFO [2019-01-20 20:26:45,332] ({main}
> ZeppelinConfiguration.java[create]:121) - Load configuration from
> file:/C:/Users/Admin/Documents/Development/Java/Geonotebook/zeppelin-0.8.0-bin-netinst/conf/zeppelin-site.xml
>
> INFO [2019-01-20 20:26:45,395] ({main}
> ZeppelinConfiguration.java[create]:129) - Server Host: 0.0.0.0
>
> INFO [2019-01-20 20:26:45,396] ({main}
> ZeppelinConfiguration.java[create]:131) - Server Port: 8080
>
> INFO [2019-01-20 20:26:45,396] ({main}
> ZeppelinConfiguration.java[create]:135) - Context Path: /
>
> INFO [2019-01-20 20:26:45,397] ({main}
> ZeppelinConfiguration.java[create]:136) - Zeppelin Version: 0.8.0
>
> INFO [2019-01-20 20:26:45,440] ({main} Log.java[initialized]:186) -
> Logging initialized @7383ms
>
> INFO [2019-01-20 20:26:45,501] ({main}
> ZeppelinServer.java[setupWebAppContext]:387) - ZeppelinServer Webapp path:
> C:\Users\Admin\Documents\Development\Java\Geonotebook\zeppelin-0.8.0-bin-netinst\webapps
>
> INFO [2019-01-20 20:26:45,573] ({main} ZeppelinServer.java[main]:213) -
> Starting zeppelin server
>
> INFO [2019-01-20 20:26:45,576] ({main} Server.java[doStart]:327) -
> jetty-9.2.15.v20160210
>
> INFO [2019-01-20 20:28:17,850] ({main}
> StandardDescriptorProcessor.java[visitServlet]:297) - NO JSP Support for /,
> did not find org.eclipse.jetty.jsp.JettyJspServlet
>
> WARN [2019-01-20 20:28:17,928] ({main}
> ServletHolder.java[getNameOfJspClass]:923) - Unable to make identifier for
> jsp rest trying rest instead
>
> WARN [2019-01-20 20:28:18,294] ({main}
> ZeppelinConfiguration.java[getConfigFSDir]:527) - zeppelin.config.fs.dir is
> not specified, fall back to local conf directory zeppelin.conf.dir
>
> WARN [2019-01-20 20:28:18,294] ({main}
> ZeppelinConfiguration.java[getConfigFSDir]:527) - zeppelin.config.fs.dir is
> not specified, fall back to local conf directory zeppelin.conf.dir
>
> DEBUG [2019-01-20 20:28:18,307] ({main}
> InterpreterSettingManager.java[<init>]:148) - InterpreterRootPath:
> C:\Users\Admin\Documents\Development\Java\Geonotebook\zeppelin-0.8.0-bin-netinst\interpreter
>
> INFO [2019-01-20 20:28:18,393] ({main}
> InterpreterSettingManager.java[<init>]:163) - Using RecoveryStorage:
> org.apache.zeppelin.interpreter.recovery.NullRecoveryStorage
>
> INFO [2019-01-20 20:28:18,395] ({main}
> InterpreterSettingManager.java[<init>]:167) - Using LifecycleManager:
> org.apache.zeppelin.interpreter.lifecycle.NullLifecycleManager
>
> WARN [2019-01-20 20:28:18,431] ({main}
> InterpreterSettingManager.java[init]:329) - No interpreter-setting.json
> found in
> C:\Users\Admin\Documents\Development\Java\Geonotebook\zeppelin-0.8.0-bin-netinst\interpreter\${
> interpreter.name}
>
> DEBUG [2019-01-20 20:28:18,441] ({main}
> InterpreterSettingManager.java[registerInterpreterFromPath]:371) - Reading
> interpreter-setting.json from file
> C:\Users\Admin\Documents\Development\Java\Geonotebook\zeppelin-0.8.0-bin-netinst\interpreter\geo-interpreter\interpreter-setting.json
>
> WARN [2019-01-20 20:28:18,453] ({main} ContextHandler.java[log]:2062) -
> unavailable
>
> MultiException stack 1 of 1
>
> java.lang.NullPointerException
>
> at java.util.HashMap.putMapEntries(Unknown Source)
>
> at java.util.HashMap.putAll(Unknown Source)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.registerInterpreterSetting(InterpreterSettingManager.java:405)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.registerInterpreterFromPath(InterpreterSettingManager.java:374)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.init(InterpreterSettingManager.java:327)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.<init>(InterpreterSettingManager.java:171)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.<init>(InterpreterSettingManager.java:131)
>
> at
> org.apache.zeppelin.server.ZeppelinServer.<init>(ZeppelinServer.java:151)
>
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
> Source)
>
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
>
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
>
> at
> org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1375)
>
> at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1083)
>
> at
> org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:978)
>
> at
> org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1082)
>
> at
> org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1074)
>
> at
> org.glassfish.jersey.inject.hk2.AbstractHk2InjectionManager.createAndInitialize(AbstractHk2InjectionManager.java:213)
>
> at
> org.glassfish.jersey.inject.hk2.ImmediateHk2InjectionManager.createAndInitialize(ImmediateHk2InjectionManager.java:54)
>
> at
> org.glassfish.jersey.server.ApplicationConfigurator.createApplication(ApplicationConfigurator.java:138)
>
> at
> org.glassfish.jersey.server.ApplicationConfigurator.init(ApplicationConfigurator.java:96)
>
> at
> org.glassfish.jersey.server.ApplicationHandler.lambda$initialize$0(ApplicationHandler.java:313)
>
> at
> org.glassfish.jersey.server.ApplicationHandler$$Lambda$44/2067180044.accept(Unknown
> Source)
>
> at java.util.Arrays$ArrayList.forEach(Unknown Source)
>
> at
> org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:313)
>
> at
> org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:282)
>
> at
> org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:335)
>
> at
> org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:178)
>
> at
> org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:370)
>
> at javax.servlet.GenericServlet.init(GenericServlet.java:244)
>
> at
> org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:616)
>
> at
> org.eclipse.jetty.servlet.ServletHolder.initialize(ServletHolder.java:396)
>
> at
> org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:871)
>
> at
> org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:298)
>
> at
> org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1349)
>
> at
> org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1342)
>
> at
> org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741)
>
> at
> org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:505)
>
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
>
> at
> org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
>
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:163)
>
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
>
> at org.eclipse.jetty.server.Server.start(Server.java:387)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
>
> at
> org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
>
> at org.eclipse.jetty.server.Server.doStart(Server.java:354)
>
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
>
> at
> org.apache.zeppelin.server.ZeppelinServer.main(ZeppelinServer.java:215)
>
> ╤П╨╜╨▓ 20, 2019 8:28:18 PM org.glassfish.jersey.internal.Errors logErrors
>
> WARNING: The following warnings have been detected: WARNING: A HTTP GET
> method, public javax.ws.rs.core.Response
> org.apache.zeppelin.rest.InterpreterRestApi.listInterpreter(java.lang.String),
> should not consume any entity.
>
> WARNING: A HTTP GET method, public javax.ws.rs.core.Response
> org.apache.zeppelin.rest.CredentialRestApi.getCredentials(java.lang.String)
> throws java.io.IOException,java.lang.IllegalArgumentException, should not
> consume any entity.
>
> WARNING: The (sub)resource method createNote in
> org.apache.zeppelin.rest.NotebookRestApi contains empty path annotation.
>
> WARNING: The (sub)resource method getNoteList in
> org.apache.zeppelin.rest.NotebookRestApi contains empty path annotation.
>
>
> WARN [2019-01-20 20:28:18,992] ({main} WebAppContext.java[doStart]:514) -
> Failed startup of context o.e.j.w.WebAppContext@12028586
> {/,file:/C:/Users/Admin/Documents/Development/Java/Geonotebook/zeppelin-0.8.0-bin-netinst/webapps/webapp/,STARTING}{C:\Users\Admin\Documents\Development\Java\Geonotebook\zeppelin-0.8.0-bin-netinst\zeppelin-web-0.8.0.war}
>
> javax.servlet.ServletException: rest@355bd4
> ==org.glassfish.jersey.servlet.ServletContainer,-1,false
>
> at
> org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:637)
>
> at
> org.eclipse.jetty.servlet.ServletHolder.initialize(ServletHolder.java:396)
>
> at
> org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:871)
>
> at
> org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:298)
>
> at
> org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1349)
>
> at
> org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1342)
>
> at
> org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741)
>
> at
> org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:505)
>
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
>
> at
> org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
>
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:163)
>
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132)
>
> at org.eclipse.jetty.server.Server.start(Server.java:387)
>
> at
> org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114)
>
> at
> org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61)
>
> at org.eclipse.jetty.server.Server.doStart(Server.java:354)
>
> at
> org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
>
> at
> org.apache.zeppelin.server.ZeppelinServer.main(ZeppelinServer.java:215)
>
> Caused by: A MultiException has 1 exceptions. They are:
>
> 1. java.lang.NullPointerException
>
>
> at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1085)
>
> at
> org.jvnet.hk2.internal.ServiceLocatorImpl.create(ServiceLocatorImpl.java:978)
>
> at
> org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1082)
>
> at
> org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:1074)
>
> at
> org.glassfish.jersey.inject.hk2.AbstractHk2InjectionManager.createAndInitialize(AbstractHk2InjectionManager.java:213)
>
> at
> org.glassfish.jersey.inject.hk2.ImmediateHk2InjectionManager.createAndInitialize(ImmediateHk2InjectionManager.java:54)
>
> at
> org.glassfish.jersey.server.ApplicationConfigurator.createApplication(ApplicationConfigurator.java:138)
>
> at
> org.glassfish.jersey.server.ApplicationConfigurator.init(ApplicationConfigurator.java:96)
>
> at
> org.glassfish.jersey.server.ApplicationHandler.lambda$initialize$0(ApplicationHandler.java:313)
>
> at
> org.glassfish.jersey.server.ApplicationHandler$$Lambda$44/2067180044.accept(Unknown
> Source)
>
> at java.util.Arrays$ArrayList.forEach(Unknown Source)
>
> at
> org.glassfish.jersey.server.ApplicationHandler.initialize(ApplicationHandler.java:313)
>
> at
> org.glassfish.jersey.server.ApplicationHandler.<init>(ApplicationHandler.java:282)
>
> at
> org.glassfish.jersey.servlet.WebComponent.<init>(WebComponent.java:335)
>
> at
> org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:178)
>
> at
> org.glassfish.jersey.servlet.ServletContainer.init(ServletContainer.java:370)
>
> at javax.servlet.GenericServlet.init(GenericServlet.java:244)
>
> at
> org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:616)
>
> ... 20 more
>
> Caused by: java.lang.NullPointerException
>
> at java.util.HashMap.putMapEntries(Unknown Source)
>
> at java.util.HashMap.putAll(Unknown Source)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.registerInterpreterSetting(InterpreterSettingManager.java:405)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.registerInterpreterFromPath(InterpreterSettingManager.java:374)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.init(InterpreterSettingManager.java:327)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.<init>(InterpreterSettingManager.java:171)
>
> at
> org.apache.zeppelin.interpreter.InterpreterSettingManager.<init>(InterpreterSettingManager.java:131)
>
> at
> org.apache.zeppelin.server.ZeppelinServer.<init>(ZeppelinServer.java:151)
>
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
> Source)
>
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
>
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
>
> at
> org.glassfish.hk2.utilities.reflection.ReflectionHelper.makeMe(ReflectionHelper.java:1375)
>
> at org.jvnet.hk2.internal.Utilities.justCreate(Utilities.java:1083)
>
> ... 37 more
>
> INFO [2019-01-20 20:28:19,072] ({main}
> AbstractConnector.java[doStart]:266) - Started ServerConnector@5ed190be
> {HTTP/1.1}{0.0.0.0:8080}
>
> INFO [2019-01-20 20:28:19,073] ({main} Server.java[doStart]:379) -
> Started @101031ms
>
> INFO [2019-01-20 20:28:19,073] ({main} ZeppelinServer.java[main]:223) -
> Done, zeppelin server started
>
> Even though log said that zeppelin server has been started, after opening
> localhost:8080 I got “HTTP ERROR: 503 Problem accessing. Reason: Service
> Unavailable”.
>
>
> I run Apache Zeppelin 0.8.0 on Windows 10.
>
>
> Please, help to figure out what I am doing wrong. Maybe I am missing
> something important in documentation.
>
>
> Sincerely yours,
>
> Nikita Terlych
>
>
>
--
Best Regards
Jeff Zhang
