Hadoop集群上安装hive并运行一个例子

Hadoop集群上安装hive并运行一个例子;排错方法:Error: org.apache.hadoop.mapred.JobConf.unset(Ljava/lang/String;)V 以及排错:FAILED: Error in metadata: javax.jdo.JDOFatalDataStoreException: Failed to start database 'metastore_db', see the next exception for details 等的解决方法;