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Han Xiao commented on HDFS-4154: -------------------------------- sorry for updating the patch until now. :D > BKJM: 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 > Components: ha > Affects Versions: 3.0.0, 2.0.3-alpha > Reporter: Ivan Kelly > Assignee: Ivan Kelly > Attachments: HDFS-4154.patch > > > 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 -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira