I have namenode HA configured with Kerberos authentication, when ranger hdfs plugin is disabled, my hdfs services are running fine, when I enable ranger HDFS plugin then my namenode is unable to come up because of below error:
File "/usr/lib/python2.6/site-packages/ambari_simplejson/decoder.py", line 353, in raw_decode raise ValueError("No JSON object could be decoded") ValueError: No JSON object could be decoded
I know there is know issue - if we change ranger admin UI password, then we also need to modify the same password in admin_password field under advance_ranger_configs section via Ambari UI. I tried doing the same thing but its not working.
Anyone has any idea or has seen this issue in past ?
Can you look into ambari and hdfs logs and check whether their is any message that has more details, especially what file/object Ambari is trying to decode?
Do you see a repository for HDFS in Ranger?
I have a cluster with NN HA and Ranger HDFS plugin enabled running on HDP 2.3.2 and Ambari 126.96.36.199 without any issues.
Edit: What version of HDP and Ambari do you have?
Can you make sure that the password for amb_ranger_admin in RangerAdmin->User is the same as in Ambari -> Ranger -> Config -> Ambari Admin User
I tried changing password for amb_ranger_admin however no luck. will update you once I get it working
I came across your problem and it seems to be a major issue. I've posted a question regarding this issue. We use Ranger for managing hive authorizations - and after changing the Ranger Admin password we can no longer use it for that. To be more precise - HiveServer2 won't start unless we disable Ranger as the authorization manager for hive in Ambari. More details in my post: https://community.hortonworks.com/questions/14329/hiveserver2-wont-start-after-changing-rangers-admi...
I really hope someone will fix this bug.
I'm having the same problem.
After changing ranger admin password in ranger & in ambari (under ambari ranger config) hive server won't start.
I get No json object could be decoded.
Only if I disable ranger from hive authorization it starts.
Any help would appreciated.