错误日志：
Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:444) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:672) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:616) 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:221) at org.apache.hadoop.util.RunJar.main(RunJar.java:136) Caused by: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1449) at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.(RetryingMetaStoreClient.java:63) at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:73) at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:2661) at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:2680) at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:425) ... 8 more Caused 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:1447) ... 13 more Caused by: MetaException(message:Metastore contains multiple versions) at org.apache.hadoop.hive.metastore.ObjectStore.getMSchemaVersion(ObjectStore.java:6643) at org.apache.hadoop.hive.metastore.ObjectStore.getMetaStoreSchemaVersion(ObjectStore.java:6605) at org.apache.hadoop.hive.metastore.ObjectStore.checkSchema(ObjectStore.java:6564) at org.apache.hadoop.hive.metastore.ObjectStore.verifySchema(ObjectStore.java:6552) 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.hive.metastore.RawStoreProxy.invoke(RawStoreProxy.java:98) at com.sun.proxy.$Proxy5.verifySchema(Unknown Source) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:539) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:587) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:429) at org.apache.hadoop.hive.metastore.RetryingHMSHandler. (RetryingHMSHandler.java:66) at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:72) at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:5554) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient. (HiveMetaStoreClient.java:178) at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient. (SessionHiveMetaStoreClient.java:73) ... 18 more123456789101112131415161718192021222324252627282930313233343536373839404142434445
解决方案：
因为hive metastore存储在mysql中，所以登录mysql，use hive所使用的DB，然后 查询下VERSION表
mysql> select * from VERSION;+——–+—————-+——————+
| VER_ID | SCHEMA_VERSION | VERSION_COMMENT | +——–+—————-+——————+ | 1 | 0.14.0 | Set by MetaStore | | 2 | 0.14.0 | Set by MetaStore | | 3 | 0.14.0 | Set by MetaStore | | 4 | 0.14.0 | Set by MetaStore | | 5 | 0.14.0 | Set by MetaStore | | 6 | 0.14.0 | Set by MetaStore | +——–+—————-+——————+保留第一条记录，其他记录全部删除
delete from VERSION where VER_ID !=1 1
出现这类异常问题原因
hive 是不支持并发的，估计我同事 不小心启动多个hive，也可能是网络问题，反正很诡异