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From "Liu Shaohui (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8675) Two active Hmasters for AUTH_FAILED in secure hbase cluster
Date Wed, 05 Jun 2013 07:53:20 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Liu Shaohui updated HBASE-8675:
-------------------------------

    Attachment: HBASE-8675-0.94-v1.patch

It's a little trick. Any other better solution?
                
> Two active Hmasters for AUTH_FAILED in secure hbase cluster
> -----------------------------------------------------------
>
>                 Key: HBASE-8675
>                 URL: https://issues.apache.org/jira/browse/HBASE-8675
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Liu Shaohui
>            Priority: Critical
>         Attachments: HBASE-8675-0.94-v1.patch
>
>
> In our product cluster, because of the net problem to kerberos server, the ZooKeeperWatcher
in active hmaster fails to Auth , gets a connection Event of AUTH_FAILED  and loose the master
lock. But the zookeeper watcher ignores the event, so the old active hmaster keeps to be active.
After the net problem is fixed, the backup hmaster gets the master lock and becomes active.
There are two two active hmasters in the cluster.
> 2013-05-30 09:44:21,004 ERROR org.apache.zookeeper.client.ZooKeeperSaslClient: An error:
(java.security.PrivilegedActionException: javax.security.sasl.SaslException: GSS initiate
failed [Caused by GSSException: No valid credentials provided (Mechanism level: krb1.xiaomi.net)])
occurred when evaluating Zookeeper Quorum Member's  received SASL token. Zookeeper Client
will go to AUTH_FAILED state.
> 2013-05-30 09:54:07,755 WARN org.apache.hadoop.hbase.zookeeper.ZKUtil: hconnection-0x3e10d98be405bc
Unable to set watcher on znode /hbase/master
> org.apache.zookeeper.KeeperException$AuthFailedException: KeeperErrorCode = AuthFailed
for /hbase/master
>         at org.apache.zookeeper.KeeperException.create(KeeperException.java:123)
>         at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>         at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1036)
>         at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:166)
>         at org.apache.hadoop.hbase.zookeeper.ZKUtil.watchAndCheckExists(ZKUtil.java:231)
>         at org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.start(ZooKeeperNodeTracker.java:76)
>         at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.ensureZookeeperTrackers(HConnectionManager.java:595)
>         at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:850)
>         at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:825)
>         at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:286)
>         at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:201)
>         at org.apache.hadoop.hbase.catalog.MetaReader.getHTable(MetaReader.java:200)
>         at org.apache.hadoop.hbase.catalog.MetaReader.getMetaHTable(MetaReader.java:226)
>         at org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:705)
>         at org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:183)
>         at org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:168)
>         at org.apache.hadoop.hbase.master.CatalogJanitor.getSplitParents(CatalogJanitor.java:123)
>         at org.apache.hadoop.hbase.master.CatalogJanitor.scan(CatalogJanitor.java:134)
>         at org.apache.hadoop.hbase.master.CatalogJanitor.chore(CatalogJanitor.java:92)
>         at org.apache.hadoop.hbase.Chore.run(Chore.java:67)
>         at java.lang.Thread.run(Thread.java:662)
> I want to just abort the hmaster server if AuthFailed or SaslAuthenticated. Any better
idea about this issue? 
> For ZookeeperWatcher is used in many classes, will the aborting will bring more problems?
Any more problems we need consider? 

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