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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3915) QJM: Failover fails with auth error in secure cluster
Date Mon, 10 Sep 2012 22:30:07 GMT
Todd Lipcon created HDFS-3915:

             Summary: QJM: Failover fails with auth error in secure cluster
                 Key: HDFS-3915
                 URL: https://issues.apache.org/jira/browse/HDFS-3915
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ha, security
    Affects Versions: QuorumJournalManager (HDFS-3077)
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
         Attachments: hdfs-3915.txt

When testing failover in a secure cluster with QJM, we ran into the following error:
java.io.IOException: Exception trying to open authenticated connection to http://xxxxx:8480/getJournal?jid=journal&segmentTxId=4325&storageInfo=-40%3A1049822920%3A0%3ACID-d7c84ac3-bb09-4d55-baae-0d561bb55e9b
	at org.apache.hadoop.security.SecurityUtil.openSecureHttpConnection(SecurityUtil.java:510)
	at org.apache.hadoop.hdfs.server.namenode.EditLogFileInputStream$URLLog$1.run(EditLogFileInputStream.java:376)
...	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:217)
	at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.catchupDuringFailover(EditLogTailer.java:176)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startActiveServices(FSNamesystem.java:635)
Caused by: GSSException: No valid credentials provided (Mechanism level: Failed to find any
Kerberos tgt)

The issue is that the EditLogFileInputStream uses the "current" user, which in the case of
the failover trigger is the admin's remote user, rather than the NN's login user.

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