执行 drop database xxxx cascade;
删除数据库的时候报错。
报错信息：Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:javax.jdo.JDOException: Exception thrown when executing query
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:javax.jdo.JDOException: Exception thrown when executing query at org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:596) at org.datanucleus.api.jdo.JDOQuery.execute(JDOQuery.java:275) at org.apache.hadoop.hive.metastore.ObjectStore.getMTable(ObjectStore.java:931) at org.apache.hadoop.hive.metastore.ObjectStore.dropTable(ObjectStore.java:812) 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:108) at com.sun.proxy.$Proxy6.dropTable(Unknown Source) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.drop_table_core(HiveMetaStore.java:1414) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.drop_table_with_environment_context(HiveMetaStore.java:1554) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:106) at com.sun.proxy.$Proxy8.drop_table_with_environment_context(Unknown Source) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.dropTable(HiveMetaStoreClient.java:791) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.dropTable(HiveMetaStoreClient.java:767) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.dropDatabase(HiveMetaStoreClient.java:637) 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.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:90) at com.sun.proxy.$Proxy9.dropDatabase(Unknown Source) at org.apache.hadoop.hive.ql.metadata.Hive.dropDatabase(Hive.java:326) at org.apache.hadoop.hive.ql.exec.DDLTask.dropDatabase(DDLTask.java:4018) at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:256) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:155) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:85) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1554) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1321) at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1139) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:962) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:952) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:269) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:221) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:431) at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:800) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:694) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:633) 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.main(RunJar.java:212) NestedThrowablesStackTrace: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'OPTION SQL_SELECT_LIMIT=DEFAULT' at line 1 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.Util.getInstance(Util.java:381) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2536) at com.mysql.jdbc.StatementImpl.executeSimpleNonQuery(StatementImpl.java:1463) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1869) at com.jolbox.bonecp.PreparedStatementHandle.executeQuery(PreparedStatementHandle.java:174) at org.datanucleus.store.rdbms.ParamLoggingPreparedStatement.executeQuery(ParamLoggingPreparedStatement.java:381) at org.datanucleus.store.rdbms.SQLController.executeStatementQuery(SQLController.java:504) at org.datanucleus.store.rdbms.query.JDOQLQuery.performExecute(JDOQLQuery.java:651) at org.datanucleus.store.query.Query.executeQuery(Query.java:1786) at org.datanucleus.store.query.Query.executeWithArray(Query.java:1672) at org.datanucleus.api.jdo.JDOQuery.execute(JDOQuery.java:266) at org.apache.hadoop.hive.metastore.ObjectStore.getMTable(ObjectStore.java:931) at org.apache.hadoop.hive.metastore.ObjectStore.dropTable(ObjectStore.java:812) 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:108) at com.sun.proxy.$Proxy6.dropTable(Unknown Source) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.drop_table_core(HiveMetaStore.java:1414) at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.drop_table_with_environment_context(HiveMetaStore.java:1554) 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.RetryingHMSHandler.invoke(RetryingHMSHandler.java:106) at com.sun.proxy.$Proxy8.drop_table_with_environment_context(Unknown Source) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.dropTable(HiveMetaStoreClient.java:791) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.dropTable(HiveMetaStoreClient.java:767) at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.dropDatabase(HiveMetaStoreClient.java:637) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:90) at com.sun.proxy.$Proxy9.dropDatabase(Unknown Source) at org.apache.hadoop.hive.ql.metadata.Hive.dropDatabase(Hive.java:326) at org.apache.hadoop.hive.ql.exec.DDLTask.dropDatabase(DDLTask.java:4018) at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:256) at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:155) at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:85) at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1554) at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1321) at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1139) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:962) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:952) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:269) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:221) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:431) at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:800) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:694) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:633) 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.main(RunJar.java:212) )
问题：之所以报错是hive和mysql的驱动包版本不兼容，hive为cdh的0.13版本 mysql驱动为5.1.6 这个mysql驱动版本太高了。
解决：删掉hive安装目录中的lib下的mysql驱动，然后选择低版本的mysql驱动。我这里选择的是5.1.31的版本。测试可行。