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From "Demai Ni (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10793) AuthFailed as a valid zookeeper state
Date Wed, 19 Mar 2014 19:01:47 GMT
Demai Ni created HBASE-10793:
--------------------------------

             Summary: AuthFailed as a valid zookeeper state 
                 Key: HBASE-10793
                 URL: https://issues.apache.org/jira/browse/HBASE-10793
             Project: HBase
          Issue Type: Bug
          Components: Zookeeper
    Affects Versions: 0.96.0
            Reporter: Demai Ni
            Assignee: Demai Ni
             Fix For: 0.96.2, 0.98.2


In kerberos mode, Zookeeper accepts SASL authentication. The AuthFailed message indicates
the client could not be authenticated, but it should proceed anyway, because only access to
znodes that require SASL authentication will be denied and this client may never need to access
them. Furthermore, AuthFailed is a valid event supported by Zookeeper, and following are valid
Zookeeper events:

                    case    0: return KeeperState.Disconnected;
                    case    3: return KeeperState.SyncConnected;
                    case    4: return KeeperState.AuthFailed;
                    case    5: return KeeperState.ConnectedReadOnly;
                    case    6: return KeeperState.SaslAuthenticated;
                    case -112: return KeeperState.Expired;

Based on above, ZooKeeperWatcher should not throw exception for AuthFailed event as an invalid
event. For this kind of event, Zookeeper already logs it as a warning and proceed with non-SASL
connection.
{code:title=IllegalStateException from ZookeeperWatcher|borderStyle=solid}
hbase(main):006:0> list
TABLE                                                                                    
                                                                                         
                        
14/01/23 17:26:11 ERROR zookeeper.ClientCnxn: Error while calling watcher
java.lang.IllegalStateException: Received event is not valid: AuthFailed
    at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.connectionEvent(ZooKeeperWatcher.java:410)
    at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:319)
    at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
    at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
BIMonitoring                                                                             
                                                                                         
                        
BIMonitoringSummary                                                                      
                                                                                         
                        
BIMonitoringSummary180                                                                   
                                                                                         
                        
BIMonitoringSummary900                                                                   
                                                                                         
                        
LogMetadata                                                                              
                                                                                         
                        
LogRecords                                                                               
                                                                                         
                        
Mtable                                                                                   
                                                                                         
                        
t1                                                                                       
                                                                                         
                        
t2                                                                                       
                                                                                         
                        
9 row(s) in 0.4040 seconds

=> ["BIMonitoring", "BIMonitoringSummary", "BIMonitoringSummary180", "BIMonitoringSummary900",
"LogMetadata", "LogRecords", "Mtable", "t1", "t2"]

{code}

the patch will be similar as HBase-8757



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