因为公司需求要开发一个数据质量监控的组件，需要连接集群上的hive,impala。
1集群采用了kerbores认证，报了第一个错误
这是由于没有配置kerbores
2参考了网上的一块代码，连接带有认证的hbase的代码
System.setProperty("java.security.krb5.conf","E:\\learning\\aaaa.keytab");
HiveConf conf = new HiveConf();
conf.set("hadoop.security.authentication","Kerberos");
conf.set("keytab.file","E:\\learning\\aaaa.keytab");
conf.set("kerberos.principal","aaaa/[email protected]");
UserGroupInformation.setConfiguration(conf);
在集群中找到自己需要的用户对应的kerbores凭证，下载下来，但是又报错了
Exception in thread "main" java.lang.IllegalArgumentException: Can't get Kerberos realm
at org.apache.hadoop.security.HadoopKerberosName.setConfiguration(HadoopKerberosName.java:65)
at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:323)
at org.apache.hadoop.security.UserGroupInformation.setConfiguration(UserGroupInformation.java:378)
at com.example.SpringBootDemo.service.ImpalaTest.main(ImpalaTest.java:17)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.security.authentication.util.KerberosUtil.getDefaultRealm(KerberosUtil.java:84)
at org.apache.hadoop.security.HadoopKerberosName.setConfiguration(HadoopKerberosName.java:63)
... 3 more
Caused by: KrbException: Cannot locate default realm
at sun.security.krb5.Config.getDefaultRealm(Config.java:1029)
... 9 more
暂时没解决