From java application : how to access kerberosed hadoop HDFS ?

[Xiaohua Chen]

Hi ,

We recently has added kerberos on our CDH4 cluster, and our java
application hit error:
Caused by: org.apache.hadoop.security.AccessControlException:
Authorization (hadoop.security.authorization) is enabled but
authentication (hadoop.security.authentication) is configured as
simple. Please configure another method like kerberos or digest.

The above error is caused by below code:

mFileSystem = FileSystem.get(uri,new Configuration(), loginUser);

FileStatus[] statusArray = mFileSystem.listStatus(pathName)


I am new to this area and can you shed some light on: how to
configure the authentication method to Kerberos to avoid the above
error ?

Thanks and regards,

Sophia

[Liu, Yi A]

You should configure "hadoop.security.authentication" to Kerberos in your core-site.xml. Please refer to
http://hadoop.apache.org/docs/r2.5.1/hadoop-project-dist/hadoop-common/SecureMode.html


Regards,
Yi Liu


-----Original Message-----
From: Xiaohua Chen [mailto:***@gmail.com]
Sent: Saturday, September 27, 2014 11:51 AM
To: ***@hadoop.apache.org
Subject: From java application : how to access kerberosed hadoop HDFS ?

Hi ,

We recently has added kerberos on our CDH4 cluster, and our java application hit error:
Caused by: org.apache.hadoop.security.AccessControlException:
Authorization (hadoop.security.authorization) is enabled but authentication (hadoop.security.authentication) is configured as simple. Please configure another method like kerberos or digest.

The above error is caused by below code:

mFileSystem = FileSystem.get(uri,new Configuration(), loginUser);

FileStatus[] statusArray = mFileSystem.listStatus(pathName)


I am new to this area and can you shed some light on: how to configure the authentication method to Kerberos to avoid the above error ?

Thanks and regar