HIVE2.X启动报错 Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaS

启动HIVE错误信息如下

Logging initialized using configuration in jar:file:/opt/soft/hive/lib/hive-common-2.1.1.jar!/hive-log4j2.properties Async: trueException in thread "main" java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:591)        at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:531)        at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:705)        at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:641)        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)        at java.lang.reflect.Method.invoke(Method.java:606)        at org.apache.hadoop.util.RunJar.run(RunJar.java:234)        at org.apache.hadoop.util.RunJar.main(RunJar.java:148)Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient        at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:226)        at org.apache.hadoop.hive.ql.metadata.Hive.<init>(Hive.java:366)        at org.apache.hadoop.hive.ql.metadata.Hive.create(Hive.java:310)        at org.apache.hadoop.hive.ql.metadata.Hive.getInternal(Hive.java:290)        at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:266)        at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:558)        ... 9 moreCaused by: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1654)        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:80)        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:130)        at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:101)        at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3367)        at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3406)        at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3386)        at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3640)        at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:236)        at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:221)        ... 14 moreCaused by: java.lang.reflect.InvocationTargetException        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)        at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1652)        ... 23 moreCaused by: javax.jdo.JDOFatalInternalException: Error creating transactional connection factoryNestedThrowables:java.lang.reflect.InvocationTargetException        at org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:671)        at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.freezeConfiguration(JDOPersistenceManagerFactory.java:834)        at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:338)        at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:217)        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)        at java.lang.reflect.Method.invoke(Method.java:606)        at javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)        at java.security.AccessController.doPrivileged(Native Method)        at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)        at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)        at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:808)        at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:701)        at org.apache.hadoop.hive.metastore.ObjectStore.getPMF(ObjectStore.java:515)        at org.apache.hadoop.hive.metastore.ObjectStore.getPersistenceManager(ObjectStore.java:544)        at org.apache.hadoop.hive.metastore.ObjectStore.initializeHelper(ObjectStore.java:399)        at org.apache.hadoop.hive.metastore.ObjectStore.initialize(ObjectStore.java:336)        at org.apache.hadoop.hive.metastore.ObjectStore.setConf(ObjectStore.java:297)        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:76)        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:136)        at org.apache.hadoop.hive.metastore.RawStoreProxy.<init>(RawStoreProxy.java:58)        at org.apache.hadoop.hive.metastore.RawStoreProxy.getProxy(RawStoreProxy.java:67)        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.newRawStore(HiveMetaStore.java:599)        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:564)        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:630)        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:416)        at org.apache.hadoop.hive.metastore.RetryingHMSHandler.<init>(RetryingHMSHandler.java:78)        at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:84)        at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6490)        at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:238)        at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:70)        ... 28 moreCaused by: java.lang.reflect.InvocationTargetException        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)        at org.datanucleus.plugin.NonManagedPluginRegistry.createExecutableExtension(NonManagedPluginRegistry.java:606)        at org.datanucleus.plugin.PluginManager.createExecutableExtension(PluginManager.java:330)        at org.datanucleus.store.AbstractStoreManager.registerConnectionFactory(AbstractStoreManager.java:203)        at org.datanucleus.store.AbstractStoreManager.<init>(AbstractStoreManager.java:162)        at org.datanucleus.store.rdbms.RDBMSStoreManager.<init>(RDBMSStoreManager.java:284)        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)        at org.datanucleus.plugin.NonManagedPluginRegistry.createExecutableExtension(NonManagedPluginRegistry.java:606)        at org.datanucleus.plugin.PluginManager.createExecutableExtension(PluginManager.java:301)        at org.datanucleus.NucleusContextHelper.createStoreManagerForProperties(NucleusContextHelper.java:133)        at org.datanucleus.PersistenceNucleusContextImpl.initialise(PersistenceNucleusContextImpl.java:420)        at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.freezeConfiguration(JDOPersistenceManagerFactory.java:821)        ... 58 moreCaused 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.        at org.datanucleus.store.rdbms.ConnectionFactoryImpl.generateDataSources(ConnectionFactoryImpl.java:232)        at org.datanucleus.store.rdbms.ConnectionFactoryImpl.initialiseDataSources(ConnectionFactoryImpl.java:117)        at org.datanucleus.store.rdbms.ConnectionFactoryImpl.<init>(ConnectionFactoryImpl.java:82)        ... 76 moreCaused by: org.datanucleus.store.rdbms.connectionpool.DatastoreDriverNotFoundException: 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.        at org.datanucleus.store.rdbms.connectionpool.AbstractConnectionPoolFactory.loadDriver(AbstractConnectionPoolFactory.java:58)        at org.datanucleus.store.rdbms.connectionpool.BoneCPConnectionPoolFactory.createConnectionPool(BoneCPConnectionPoolFactory.java:54)        at org.datanucleus.store.rdbms.ConnectionFactoryImpl.generateDataSources(ConnectionFactoryImpl

错误原因是由于hive 2.X版本后在启动hive前要先初始化元数据库
执行以下命令进行初始化

schematool -dbType mysql -initSchema

再次启动hive即可