安装hive后，启动hive时报错

1.检查下你的hadoop集群是否能正常启动。使用jps命令看看主进程信息

查看下namenode的日志文件，里面会有说明的

2.检查下ip地址是否是启用了ipv6,如果是则修改为ipv4

3.让hadoop集群脱离 安全模式

4.如有必要，格式化namenode。重新启动namenode

看下你的防火墙关闭了么？如果已经关闭了，把你的Hadoop配置文件上传一下。

hadoop集群能正常启动的，服务器上同时用了ipv6和ipv4，那就是只把ipv6禁用就可以了？

通过hadoop dfsadmin -safemode leave命令让hadoop集群脱离安全模式，同样报了这个错误，和我启动hive报错一样

[hadoop@WasData43 bin]$ hadoop dfsadmin -safemode leave

DEPRECATED: Use of this script to execute hdfs command is deprecated.

Instead use the hdfs command for it.

17/03/02 17:22:48 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

safemode: Call From WasData43/20.12.5.43 to WasData43:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

hadoop集群能正常启动的，服务器上同时用了ipv6和ipv4，那就是只把ipv6禁用就可以了？

通过hadoop dfsadmin -safemode leave命令让hadoop集群脱离安全模式，同样报了这个错误，和我启动hive报错一样

[hadoop@WasData43 bin]$ hadoop dfsadmin -safemode leave

DEPRECATED: Use of this script to execute hdfs command is deprecated.

Instead use the hdfs command for it.

17/03/02 17:22:48 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

safemode: Call From WasData43/20.12.5.43 to WasData43:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused