运行hive之后出现以下问题，
Exception in thread “main” java.lang.RuntimeException: java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType …) to create the schema. If needed, don’t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql))
at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:636)
at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:553)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:750)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686)
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:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType …) to create the schema. If needed, don’t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql))
at org.apache.hadoop.hive.ql.session.SessionState.setupAuth(SessionState.java:889)
at org.apache.hadoop.hive.ql.session.SessionState.getAuthenticator(SessionState.java:1483)
at org.apache.hadoop.hive.ql.session.SessionState.getUserFromAuthenticator(SessionState.java:1154)
at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.setupSessionAcls(TezSessionState.java:441)
at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.openInternal(TezSessionState.java:311)
at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.beginOpen(TezSessionState.java:210)
at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:633)
… 9 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType …) to create the schema. If needed, don’t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql))
at org.apache.hadoop.hive.ql.session.SessionState.setAuthorizerV2Config(SessionState.java:921)
at org.apache.hadoop.hive.ql.session.SessionState.setupAuth(SessionState.java:881)
… 15 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType …) to create the schema. If needed, don’t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql))
at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:236)
at org.apache.hadoop.hive.ql.metadata.Hive.(Hive.java:388)
at org.apache.hadoop.hive.ql.metadata.Hive.create(Hive.java:332)
at org.apache.hadoop.hive.ql.metadata.Hive.getInternal(Hive.java:312)
at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:288)
at org.apache.hadoop.hive.ql.session.SessionState.setAuthorizerV2Config(SessionState.java:917)
… 16 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: MetaException(message:Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType …) to create the schema. If needed, don’t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql))
at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3897)
at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:248)
at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:231)
… 21 more
Caused by: MetaException(message:Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType …) to create the schema. If needed, don’t forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql))
at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3660)
at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3632)
at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3894)
… 23 more
解决方法：
[hadoop@hadoop102 hive]$ cd bin
[hadoop@hadoop102 bin]$ ./schematool -initSchema -dbType mysql