Rhive：消息显示：未连接到Hiveserver2（但可以连接HDFS）

Question

我一直在尝试使用RHive连接R和Hive，并且所需的软件包（Rhive，rJava，Rserve）都已安装，环境变量组。在RI正在尝试以下，不知道是什么原因无法连接hiveserver，感谢：

启动[R

> [R

负载Rhive包

>库（RHive）

设置环境变量

> Sys.setenv（HIVE_HOME = “/ USR /本地/ Apache-蜂房-0.14.0槽”）

> Sys.setenv（HADOOP_HOME =“/ USR /local/hadoop-2.5.1" ）

初始化数据库

> rhive.init（）

检查环境变量

> rhive.env（）

hadoop home: /usr/local/hadoop-2.5.1 
    fs: file:/// 
    hive home: /usr/local/apache-hive-0.14.0-bin 
    user name: hadoop 
    user home: /home/hadoop 
    temp dir: /tmp/hadoop>** 

进行连接

> rhive.connect（）

个错误：

2015-06-10 15:19:48,060 INFO jdbc.Utils (Utils.java:parseURL(285)) - Supplied authorities: 127.0.0.1:10000 
2015-06-10 15:19:48,060 INFO jdbc.Utils (Utils.java:parseURL(372)) - Resolved authority: 127.0.0.1:10000 
2015-06-10 15:19:48,061 INFO jdbc.HiveConnection (HiveConnection.java:openTransport(189)) - Will try to open client transport with JDBC Uri: jdbc:hive2://127.0.0.1:10000/default 
2015-06-10 15:19:48,061 INFO jdbc.HiveConnection (HiveConnection.java:openTransport(194)) - Could not open client transport with JDBC Uri: jdbc:hive2://127.0.0.1:10000/default 
Exception in thread "Thread-39" java.lang.RuntimeException: java.sql.SQLException: Could not open client transport with JDBC Uri: jdbc:hive2://127.0.0.1:10000/default: java.net.ConnectException: Connection refused 
     at com.nexr.rhive.hive.HiveJdbcClient$HiveJdbcConnector.connect(HiveJdbcClient.java:337) 
     at com.nexr.rhive.hive.HiveJdbcClient$HiveJdbcConnector.run(HiveJdbcClient.java:322) 
Caused by: java.sql.SQLException: Could not open client transport with JDBC Uri: jdbc:hive2://127.0.0.1:10000/default: java.net.ConnectException: Connection refused 
     at org.apache.hive.jdbc.HiveConnection.openTransport(HiveConnection.java:215) 
     at org.apache.hive.jdbc.HiveConnection.<init>(HiveConnection.java:163) 
     at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105) 
     at java.sql.DriverManager.getConnection(DriverManager.java:571) 
     at java.sql.DriverManager.getConnection(DriverManager.java:215) 
     at com.nexr.rhive.hive.DatabaseConnection.connect(DatabaseConnection.java:51) 
     at com.nexr.rhive.hive.HiveJdbcClient$HiveJdbcConnector.connect(HiveJdbcClient.java:330) 
     ... 1 more 
Caused by: org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused 
     at org.apache.thrift.transport.TSocket.open(TSocket.java:185) 
     at org.apache.thrift.transport.TSaslTransport.open(TSaslTransport.java:248) 
     at org.apache.thrift.transport.TSaslClientTransport.open(TSaslClientTransport.java:37) 
     at org.apache.hive.jdbc.HiveConnection.openTransport(HiveConnection.java:190) 
     ... 7 more 
Caused by: java.net.ConnectException: Connection refused 
     at java.net.PlainSocketImpl.socketConnect(Native Method) 
     at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) 
     at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) 
     at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) 
     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) 
     at java.net.Socket.connect(Socket.java:579) 
     at org.apache.thrift.transport.TSocket.open(TSocket.java:180) 
     ... 10 more 
Error: java.lang.IllegalStateException: Not connected to hiveserver 

Answer 1

我解决了连接到“hivevserver”而不是“hivesever2”连接问题，效果很好;代码如下，希望可以作为参考，如果有人遇到相同的问题：

>R 
    >Sys.setenv(HIVE_HOME="/usr/local/apache-hive-0.14.0-bin") 
    >Sys.setenv(HADOOP_HOME="/usr/local/hadoop-2.5.1") 
    >library(RHive) 
    >rhive.init 
     (
      hiveLib="/usr/local/apache-hive-0.14.0-bin", 
      hadoopConf="/usr/local/hadoop-2.5.1/etc/hadoop", 
      hadoopLib="/usr/local/hadoop-2.5.1/lib",verbose=FALSE 
     ) 
    >rhive.connect("172.22.25.162",hiveServer2=FALSE,defaultFS="hdfs://master:9000") 
    >tables_overview<-rhive.query("show tables") 
    >View(tables_overview)