我开发了Java应用程序来连接到Ldap服务器，并根据用户参数获取csv格式的详细信息。结果csv文件将保存在HDFS（Hadoop文件系统）中。
为了写入HDFS，我导入了org.apache.hadoop.security.UserGroupInformation并正确设置了Kerberos配置。以下是代码段。
config.set("hadoop.security.authentication","Kerberos");
UserGroupInformation.setConfiguration(config);
UserGroupInformation.loginUserFromKeytab(Principal,KeyTabfile);
我们将keytab文件保存在POC环境的边缘服务器中。当我从边缘服务器运行Java应用程序时，它正在读取运行良好的keytab文件并将结果写入HDFS。
但是当我尝试使用oozie来编写这个应用程序时，我的问题就开始了。 Oozie将根据资源的可用性在集群中的任何数据节点中启动Java操作，并且无法访问边缘服务器。因此，我在oozie中的java操作因安全异常而无法读取边缘服务器中的keytab文件。
以下是例外情况。
java.io.IOException: Login failure for hdfs://namenode:8020 from keytab xxxxx@zz.yy.COM: javax.security.auth.login.LoginException: java.lang.IllegalArgumentException: Empty nameString not allowed
at sun.security.krb5.PrincipalName.validateNameStrings(PrincipalName.java:171)
at sun.security.krb5.PrincipalName.<init>(PrincipalName.java:393)
at sun.security.krb5.PrincipalName.<init>(PrincipalName.java:460)
at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:650)
at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:617)
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:497)
at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
at org.apache.hadoop.security.UserGroupInformation.loginUserFromKeytab(UserGroupInformation.java:967)
at RunLdap_Utility.ldapLookupLoop(RunLdap_Utility.java:142)
at RunLdap_Utility.main(RunLdap_Utility.java:72)
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:497)
at org.apache.oozie.action.hadoop.JavaMain.run(JavaMain.java:56)
at org.apache.oozie.action.hadoop.LauncherMain.run(LauncherMain.java:47)
at org.apache.oozie.action.hadoop.JavaMain.main(JavaMain.java:35)
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:497)
at org.apache.oozie.action.hadoop.LauncherMapper.map(LauncherMapper.java:241)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
请建议我解决这个问题