We are running a HDP Cloudera Cluster version 3.1, kerberized. All the services but HBase are starting with no issue. For HBase, when the service starts, both nodes are starting as Master, then switch to Standby, and finally goes down. telling in the logs that the service doesn´t have owner permissions in an specific HDFS filesystem path, for an user that is not the one starting the service.   Even further, eventhough the HDFS before I start the service, at the mentioned filesystem path has everything owned by an user with a name "userA" and a group "groupA", all of the sudden when starting, it changes, for instance, the .tmp directory to be owned by a different user, let´s call it "userB"   In Ranger the rules are properly defined, Kerberos is working fine (tickets are valid), and it worth to mention that it started all of the sudden. Herewith the error stack trace (or part of it):   2024-01-11 13:01:05,695 DEBUG [Thread-18] util.FSTableDescriptors: Current path=hdfs://env1/apps/hbase/data/data/hbase/meta/.tabledesc/.tableinfo.0000000001 2024-01-11 13:01:05,799 ERROR [Thread-18] master.MasterFileSystem: Failed to create or set permission on staging directory hdfs://env1/apps/hbase/data/staging 2024-01-11 13:01:05,805 ERROR [Thread-18] master.HMaster: Failed to become active master java.io.IOException: Failed to create or set permission on staging directory hdfs://env1/apps/hbase/data/staging at org.apache.hadoop.hbase.master.MasterFileSystem.checkStagingDir(MasterFileSystem.java:381) at org.apache.hadoop.hbase.master.MasterFileSystem.createInitialFileSystemLayout(MasterFileSystem.java:169) at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:122) at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:827) at org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2225) at org.apache.hadoop.hbase.master.HMaster.lambda$run$0(HMaster.java:568) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.hadoop.security.AccessControlException: Permission denied. user=userA is not the owner of inode=/apps/hbase/data/staging at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkOwner(FSPermissionChecker.java:302) at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:269) at org.apache.ranger.authorization.hadoop.RangerHdfsAuthorizer$RangerAccessControlEnforcer.checkDefaultEnforcer(RangerHdfsAuthorizer.java:58   Any idea would be appreciated. I have tried with plenty of forums entries I have found.   Have a great day!   ... View more

Hello team,   I have tried to change the cluster certificates following the indications from the manual, plus internal company documents.   I am stucked when starting the cluster, as when I try to start the INFR Solr instance, it returns a "no valid keystore" message.   I have tried with the passwords that are configured in the config files for the service, and it works smoothly.   I have done manual comparisson to working environments and everything seems to be in order.   Any idea where to hit? Thanks in advance 🙂 ... View more

Hi,   I have inherited some Hadoop 3.1.1 clusters. There is a configured connection between SAP BO and Hadoop using Knox 1.0.0 as the Proxy for authentication.   The problem that I have is that I don´t count with user to authenticate to Knox, and I need to edit the gateway.   Is there a way to recover the admin password?   Thanks for your support. ... View more