【HBase数据开发】集群搭建NameNode未格式化
1.报错如下
Encountered exception loading fsimage
java.io.IOException: NameNode is not formatted.上午10点28:19.302分 WARN FSNamesystem
Encountered exception loading fsimage
java.io.IOException: NameNode is not formatted.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:238)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1152)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:799)
at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:614)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:676)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:844)
at org.apache.hadoop.hdfs.server.namenode.NameNode.(NameNode.java:823)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1547)
错误原因：
原因是namenode元数据被破坏了，需要修复。
解决办法：
输入命令：hadoop namenode -recover
全都选择 ‘c’ 即可
但是，会继续抛出异常。
rg.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /dfs/nn is in an inconsistent state: storage directory does not exist or is not accessible.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverStorageDirs(FSImage.java:377)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:228)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1152)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:799)
at org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1437)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1531)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1615)
20/07/22 10:33:47 INFO namenode.MetaRecoveryContext: RECOVERY FAILED: caught exception
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /dfs/nn is in an inconsistent state: storage directory does not exist or is not accessible.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverStorageDirs(FSImage.java:377)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:228)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1152)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:799)
at org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1437)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1531)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1615)
20/07/22 10:33:47 ERROR namenode.NameNode: Failed to start namenode.
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /dfs/nn is in an inconsistent state: storage directory does not exist or is not accessible.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverStorageDirs(FSImage.java:377)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:228)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1152)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:799)
at org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1437)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1531)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1615)
20/07/22 10:33:47 INFO util.ExitUtil: Exiting with status 1
继续看下是什么原因
2.第二个报错
20/07/22 10:33:47 ERROR namenode.NameNode: Failed to start namenode.
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /dfs/nn is in an inconsistent state: storage directory does not exist or is not accessible.
执行这个
hadoop namenode –format
成功，一直Y就可以了。
新来一个报错。
Encountered exception loading fsimage
java.io.FileNotFoundException: /dfs/nn/current/VERSION (Permission denied)3.第三个报错。
Encountered exception loading fsimage
java.io.FileNotFoundException: /dfs/nn/current/VERSION (Permission denied)问题解决：
chown hdfs:root -R /dfs/nn/*
可以完美解决，哈哈。ok了，马上就可以愉快地跑任务了。
4.第四个报错。
似乎还是权限问题。
Error starting NodeManager
org.apache.hadoop.service.ServiceStateException: org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: Permission denied
Error starting NodeManager
org.apache.hadoop.service.ServiceStateException: org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error: /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/LOCK: Permission denied
chmod 777 /var/lib/hadoop-yarn
chmod 777 /var/lib/hadoop-yarn/yarn-nm-recovery
chmod 777 /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state
5.第五个报错，JobManager
来看看第五个报错
上午10点51:25.326分 FATAL HMaster
Unhandled exception. Starting shutdown.
org.apache.hadoop.security.AccessControlException: Permission denied: user=hbase, access=WRITE, inode="/":root:supergroup:drwxr-xr-x
at org.apache.hadoop.hdfs.server.namenode.DefaultAuthorizationProvider.checkFsPermission(DefaultAuthorizationProvider.java:279)
at org.apache.hadoop.hdfs.server.namenode.DefaultAuthorizationProvider.check(DefaultAuthorizationProvider.java:260)
at org.apache.hadoop.hdfs.server.namenode.DefaultAuthorizationProvider.check(DefaultAuthorizationProvider.java:240)
at org.apache.hadoop.hdfs.server.namenode.DefaultAuthorizationProvider.checkPermission(DefaultAuthorizationProvider.java:162)
Unhandled exception. Starting shutdown.
org.apache.hadoop.security.AccessControlException: Permission denied: user=hbase, access=WRITE, inode="/":root:supergroup:drwxr-xr-x因为只是开发环境，所以
hdfs dfs -mkdir /hbase
hdfs dfs -chmod 777 /hbase
直接给最大权限
重启应该就行了
6.第六个报错
Error starting JobHistoryServer
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Error creating done directory: [hdfs://node1:8020/user/history/done]Error starting JobHistoryServer
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Error creating done directory: [hdfs://node1:8020/user/history/done]
sudo -u hdfs hdfs dfs -chmod -R 777 /
赋权试一下
好了，hbase、yarn启动成功了，通过了，
很开心。哈哈
但是hive又来幺蛾子了。
7.第七个hive的问题
+ exec /opt/cloudera/parcels/CDH-5.16.2-1.cdh5.16.2.p0.8/lib/hive/bin/hive --config /run/cloudera-scm-agent/process/205-hive-HIVEMETASTORE --service metastore -p 9083
OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=512M; support was removed in 8.0
OpenJDK 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=512M; support was removed in 8.0
javax.jdo.JDOFatalInternalException: Error creating transactional connection factory
at org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:587)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.freezeConfiguration(JDOPersistenceManagerFactory.java:788)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:333)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:202)
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:498)
at javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)
at java.security.AccessController.doPrivileged(Native Method)
at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)
at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:808)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:701)
at org.apache.hadoop.hive.metastore.ObjectStore.getPMF(ObjectStore.java:420)
at org.apache.hadoop.hive.metastore.ObjectStore.getPersistenceManager(ObjectStore.java:449)
at org.apache.hadoop.hive.metastore.ObjectStore.initialize(ObjectStore.java:344)这个问题基本上就是hive没有jar有关。
日志能看到
Caused by: org.datanucleus.exceptions.NucleusException: Attempt to invoke the "BONECP" plugin to create a ConnectionPool gave an error : The specified datastore driver ("com.mysql.jdbc.Driver") was not found in the CLASSPATH. Please check your CLASSPATH specification, and the name of the driver.
Caused by: org.datanucleus.exceptions.NucleusException: Attempt to invoke the "BONECP" plugin to create a ConnectionPool gave an error : The specified datastore driver ("com.mysql.jdbc.Driver") was not found in the CLASSPATH. Please check your CLASSPATH specification, and the name of the driver.
看到应该是hive缺少一个连接mysql的第三方jar连接包，我们要弄一下了。
但是呢我们在cdh的hive的lib下面放了jar之后，还有一个
MetaException(message:Version information not found in metastore. )OpenJDK 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=512M; support was removed in 8.0
MetaException(message:Version information not found in metastore. )
at org.apache.hadoop.hive.metastore.ObjectStore.checkSchema(ObjectStore.java:7387)
at org.apache.hadoop.hive.metastore.ObjectStore.verifySchema(ObjectStore.java:7363)
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:498)
at org.apache.hadoop.hive.metastore.RawStoreProxy.invoke(RawStoreProxy.java:103)
at com.sun.proxy.$Proxy7.verifySchema(Unknown Source)
at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:664)
at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:712)
at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:511)
at org.apache.hadoop.hive.metastore.RetryingHMSHandler.(RetryingHMSHandler.java:78)
at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:84)
at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6511)
at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6506)
at org.apache.hadoop.hive.metastore.HiveMetaStore.startMetaStore(HiveMetaStore.java:6756)
at org.apache.hadoop.hive.metastore.HiveMetaStore.main(HiveMetaStore.java:6683)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:226)
at org.apache.hadoop.util.RunJar.main(RunJar.java:141)
Exception in thread "main" MetaException(message:Version information not found in metastore. )
at org.apache.hadoop.hive.metastore.ObjectStore.checkSchema(ObjectStore.java:7387)
at org.apache.hadoop.hive.metastore.ObjectStore.verifySchema(ObjectStore.java:7363)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.hive.metastore.RawStoreProxy.invoke(RawStoreProxy.java:103)
at com.sun.proxy.$Proxy7.verifySchema(Unknown Source)
at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:664)
at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:712)
at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:511)
at org.apache.hadoop.hive.metastore.RetryingHMSHandler.(RetryingHMSHandler.java:78)
at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:84)
at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6511)
这个，再找一下，
/opt/cloudera/parcels/CDH/lib/hive/scripts/metastore/upgrade/mysql
这里然后进入mysql
mysql
source hive-schema-1.1.0.mysql.sql;
8.第八个错误
[Errno 2] No such file or directory: '/var/log/oozie/oozie-cmf-oozie-OOZIE_SERVER-node1.log.out'[Errno 2] No such file or directory: '/var/log/oozie/oozie-cmf-oozie-OOZIE_SERVER-node1.log.out'
直接赋权限，看看，应该能行吧
rm: cannot remove /var/lib/oozie/tomcat-deployment/webapps/oozie/docs: Permission denied
cp: failed to access /var/lib/oozie/tomcat-deployment/webapps/oozie/docs: Permission denied
mkdir: cannot create directory /var/lib/oozie: Permission denied
cp: failed to access /var/lib/oozie/tomcat-deployment/webapps/oozie/WEB-INF: Permission denied
chown: cannot access /var/lib/oozie/tomcat-deployment: Permission denied
rm: cannot remove /var/lib/oozie/tomcat-deployment/webapps/oozie/docs: Permission denied
cp: failed to access /var/lib/oozie/tomcat-deployment/webapps/oozie/docs: Permission denied
mkdir: cannot create directory /var/lib/oozie: Permission denied
cp: failed to access /var/lib/oozie/tomcat-deployment/webapps/oozie/WEB-INF: Permission denied
chown: cannot access /var/lib/oozie/tomcat-deployment: Permission denied
9.第九个错误
可能是mysql的驱动没有，别急
CMF_CONF_DIR=/etc/cloudera-scm-agent
Copying JDBC jar from /usr/share/java/mysql-connector-java.jar to /var/lib/oozie
ERROR: Oozie could not be started
REASON: org.apache.oozie.service.ServiceException: E0103: Could not load service classes, Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
Stacktrace:
-----------------------------------------------------------------
org.apache.oozie.service.ServiceException: E0103: Could not load service classes, Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.oozie.service.Services.loadServices(Services.java:309)
at org.apache.oozie.service.Services.init(Services.java:213)
at org.apache.oozie.servlet.ServicesLoader.contextInitialized(ServicesLoader.java:46)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4276)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4779)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:803)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:780)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:583)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:944)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:779)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:505)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1322)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:325)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1069)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:822)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1061)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:761)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
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:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.apache.openjpa.persistence.PersistenceException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.openjpa.jdbc.sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:106)
at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:603)
at org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1520)
at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:533)
at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:458)
at org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:121)
at org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
at org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
at org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:967)
at org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:958)
at org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:642)
at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:202)
at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:154) CMF_CONF_DIR=/etc/cloudera-scm-agent
Copying JDBC jar from /usr/share/java/mysql-connector-java.jar to /var/lib/oozie
ERROR: Oozie could not be started
REASON: org.apache.oozie.service.ServiceException: E0103: Could not load service classes, Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
Stacktrace:
-----------------------------------------------------------------
org.apache.oozie.service.ServiceException: E0103: Could not load service classes, Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.oozie.service.Services.loadServices(Services.java:309)
at org.apache.oozie.service.Services.init(Services.java:213)
at org.apache.oozie.servlet.ServicesLoader.contextInitialized(ServicesLoader.java:46)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4276)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4779)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:803)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:780)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:583)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:944)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:779)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:505)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1322)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:325)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1069)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:822)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1061)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:761)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
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:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.apache.openjpa.persistence.PersistenceException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.openjpa.jdbc.sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:106)
at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:603)
at org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1520)
at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:533)
at org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:458)
at org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:121)
at org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
at org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
at org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:967)
at org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:958)
at org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:642)
at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:202)
at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:154)
即可搞定。好的，接下来，我们再看看，还有什么错误。
10.hue报错
基本也是权限问题，解决也容易，至此服务启动
ok，起飞了
11.再来一次，还是说格式化的问题
对当前 NameNode 的名称目录进行格式化。如果名称目录不为空，此操作将失败。
这个是因为我之前安装失败了然后dfs下的nn目录不为空，删除每台机器下dfs目录下的nn目录就行了。
将namenode的目录删除就好 我的是在/dfs/nn
然后重试就可以了
rm -rf /dfs/nn 即可
12.奇怪的报错。namenode 和 datanode 集群id不匹配
IOException in offerService java.io.IOException: Failed on local exception: java.io.IOException: Connection reset by peer; Host Details : local host is: "node1/172.16.0.56"; destination host is: "node1":8022;
这个问题搞了很久，那么我来吧报错写的详细点，再来告诉你怎么回事
然后请注意，你需要确定你的集群的目录
/dfs 这里，要符合 nn里面 snn 以及 dn里面 version 里面的clusterId一致才行，好的，我们规整一下。
那我们就改成 13好了
成功，思路就是 /dfs/nn 和 /dfs/dn 下 version里的cluster_id 保持一致即可
13.yarn的问题，好难解决啊
HDFS dependency of YARN (MR2 Included) does not have sufficient roles running.
Completed only 0/1 steps. First failure: Completed only 0/2 steps. First failure: Failed to execute command Create Job History Dir on service YARN (MR2 Included)
这个太棘手了，好难搞啊。