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From "Ivan Kelly (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4154) Two namenodes usng bkjm can race to create the version znode
Date Tue, 06 Nov 2012 11:56:12 GMT
Ivan Kelly created HDFS-4154:
--------------------------------

             Summary: Two namenodes usng bkjm can race to create the version znode
                 Key: HDFS-4154
                 URL: https://issues.apache.org/jira/browse/HDFS-4154
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Ivan Kelly
            Assignee: Ivan Kelly
             Fix For: 3.0.0, 2.0.3-alpha


nd one will get the following error.

2012-11-06 10:04:00,200 INFO hidden.bkjournal.org.apache.zookeeper.ClientCnxn: Session establishment
complete on server 109-231-69-172.flexiscale.com/109.231.69.172:2181, sessionid = 0x13ad528fcfe0005,
negotiated timeout = 4000
2012-11-06 10:04:00,710 FATAL org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in
namenode join
java.lang.IllegalArgumentException: Unable to construct journal, bookkeeper://109.231.69.172:2181;109.231.69.173:2181;109.231.69.174:2181/hdfsjournal
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.createJournal(FSEditLog.java:1251)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournals(FSEditLog.java:226)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initSharedJournalsForRead(FSEditLog.java:206)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.initEditLog(FSImage.java:657)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:590)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:259)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:544)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:423)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:385)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:401)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:435)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:611)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:592)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1135)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1201)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.createJournal(FSEditLog.java:1249)
        ... 14 more
Caused by: java.io.IOException: Error initializing zk
        at org.apache.hadoop.contrib.bkjournal.BookKeeperJournalManager.<init>(BookKeeperJournalManager.java:233)
        ... 19 more
Caused by: hidden.bkjournal.org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode
= NodeExists for /hdfsjournal/version
        at hidden.bkjournal.org.apache.zookeeper.KeeperException.create(KeeperException.java:119)
        at hidden.bkjournal.org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at hidden.bkjournal.org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:778)
        at org.apache.hadoop.contrib.bkjournal.BookKeeperJournalManager.<init>(BookKeeperJournalManager.java:222)
        ... 19 more

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