hive 客户端报错：Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.metastore.HiveMetaStoreClient
咋一看以为是Mysql连接不上，结果发现Mysql正常
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.<init>(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.<init>(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.<init>(HiveMetaStoreClient.java:178)
at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:73)
... 18 more
解决方案：
mysql> select * from version; +--------+----------------+------------------+ | VER_ID | SCHEMA_VERSION | VERSION_COMMENT | +--------+----------------+------------------+ | 1 | 0.13.0 | Set by MetaStore | | 6 | 0.13.0 | Set by MetaStore | +--------+----------------+------------------+ 删除了一条就好了。
原因暂且未知，不过我记得我当时是打开了Hive客户端，但是网络突然断了，不知道是否是这个原因。