1、Caused by: java.net.ConnectException: Connection refused
解决:启动hadoop
2、 FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
解决:元数据初始化的问题,在启动hive之前,执行
schematool -dbType derby -initSchema
来初始化元数据库