impala无法在cloudera-quickstart-vm-5.10中工作，因为impala守护进程没有启动。
以下是 Impala 所需的三个角色的状态：
Impala 守护星坏了
impala目录服务器运行状况不好&
Impala 国营商店健康状况良好
获取以下错误消息：

Jul 22, 9:57:33.262 AM  ERROR   impala-server.cc:252    
Could not read the root directory at hdfs://quickstart.cloudera:8020. Error was: Call From quickstart.cloudera/127.0.0.1 to quickstart.cloudera:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
Jul 22, 9:57:33.262 AM  ERROR   impala-server.cc:255    
Aborting Impala Server startup due to improper configuration. Impalad exiting.

尝试通过命令行重新启动服务。

[cloudera@quickstart ~]$ sudo service impala-server restart
Stopped Impala Server:                                     [  OK  ]
Started Impala Server (impalad):                           [  OK  ]
[cloudera@quickstart ~]$ service impala-server status
Impala Server is dead and pid file exists                  [FAILED]

但它仍然不起作用。不知道我是否可以为它做一些配置更改。如果是这样的话，就找不到什么可以改变它的工作方式了。