解决集群部署Hadoop 启动后没有ResourceManager问题
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解决集群部署Hadoop 启动后没有ResourceManager问题
问题
我安装的是Hadoop3.3.4,使用的是Java17,在启动hadoop时,出现了下面的问题
1. 启动完成后输入jps命令没有看到ResourceManager
2. 查看ResourceManager日志出现java.lang.reflect.InaccessibleObjectException异常
2023-03-18 11:14:47,513 ERROR org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error starting ResourceManager
java.lang.ExceptionInInitializerError
at com.google.inject.internal.cglib.reflect.$FastClassEmitter.<init>(FastClassEmitter.java:67)
at com.google.inject.internal.cglib.reflect.$FastClass$Generator.generateClass(FastClass.java:72)
at com.google.inject.internal.cglib.core.$DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at com.google.inject.internal.cglib.core.$AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at com.google.inject.internal.cglib.reflect.$FastClass$Generator.create(FastClass.java:64)
at com.google.inject.internal.BytecodeGen.newFastClass(BytecodeGen.java:204)
at com.google.inject.internal.ProviderMethod$FastClassProviderMethod.<init>(ProviderMethod.java:256)
at com.google.inject.internal.ProviderMethod.create(ProviderMethod.java:71)
at com.google.inject.internal.ProviderMethodsModule.createProviderMethod(ProviderMethodsModule.java:275)
at com.google.inject.internal.ProviderMethodsModule.getProviderMethods(ProviderMethodsModule.java:144)
at com.google.inject.internal.ProviderMethodsModule.configure(ProviderMethodsModule.java:123)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:349)
at com.google.inject.AbstractModule.install(AbstractModule.java:122)
at com.google.inject.servlet.ServletModule.configure(ServletModule.java:52)
at com.google.inject.AbstractModule.configure(AbstractModule.java:62)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340)
at com.google.inject.spi.Elements.getElements(Elements.java:110)
at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:138)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104)
at com.google.inject.Guice.createInjector(Guice.java:96)
at com.google.inject.Guice.createInjector(Guice.java:73)
at com.google.inject.Guice.createInjector(Guice.java:62)
at org.apache.hadoop.yarn.webapp.WebApps$Builder.build(WebApps.java:417)
at org.apache.hadoop.yarn.webapp.WebApps$Builder.start(WebApps.java:465)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startWepApp(ResourceManager.java:1389)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStart(ResourceManager.java:1498)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:194)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1699)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @5e922278
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
at com.google.inject.internal.cglib.core.$ReflectUtils$2.run(ReflectUtils.java:56)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
at com.google.inject.internal.cglib.core.$ReflectUtils.<clinit>(ReflectUtils.java:46)
... 29 more
解决方法
1. 停止hadoop
2. 修改每台机器上的hadoop-env
我的在/opt/hadoop-3.3.4/etc/hadoop
这个路径下
找到这里
添加代码
export HADOOP_OPTS="--add-opens java.base/java.lang=ALL-UNNAMED"
这个是添加java运行时参数,不过上面注明了这样是不推荐的
然后分发到其他机器
for i in 1..4;do scp -r /opt/hadoop-3.3.4/etc/hadoop/hadoop-env.sh root@vice$i:/opt/hadoop-3.3.4/etc/hadoop/hadoop-env.sh;done
3. 删除所有机器上tmp和logs文件夹里的内容
4. master重新格式化NameNode
hdfs namenode -format
5. 启动hadoop
start-all.sh
6. 查看是否解决问题
(1)master服务器上输入jps命令
出现了ResourceManager
(2)在从节点上输入jps命令
运行正常
(3)访问一下http://192.168.186.141:8088/
运行正常
(4)访问一下http://192.168.186.141:9870/
一切正常,问题成功解决
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