[HDFS-3408] BKJM : Namenode format fails, if there is no BK root

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.0.2-alpha
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Rakesh Radhakrishnan
• Reporter: Rakesh Radhakrishnan
• Created: 10/May/12 13:48
• Updated: 04/Sep/14 00:59
• Resolved: 12/Jun/12 18:06

Description

scenario:

1) /ledgers/available zNode is not created in ZooKeeper.

2) Apply NN formatting using : hadoop namenode -format

Namenode formatting has dependency with the BookKeeper client and is throwing the following exception.

12/05/10 16:41:57 ERROR namenode.NameNode: Exception in namenode join
java.lang.IllegalArgumentException: Unable to construct journal, bookkeeper://10.18.40.155:2183;10.18.40.155:2182;10.18.40.155:2181/NN
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.createJournal(FSEditLog.java:1226)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJournals(FSEditLog.java:242)
        at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initSharedJournalsForRead(FSEditLog.java:223)
        at org.apache.hadoop.hdfs.server.namenode.FSImage.<init>(FSImage.java:134)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:718)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1091)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1191)
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:1224)
        ... 6 more
Caused by: java.io.IOException: Error initializing zk
        at org.apache.hadoop.contrib.bkjournal.BookKeeperJournalManager.<init>(BookKeeperJournalManager.java:191)
        ... 11 more
Caused by: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
        at org.apache.bookkeeper.client.BookieWatcher.readBookiesBlocking(BookieWatcher.java:140)
        at org.apache.bookkeeper.client.BookKeeper.<init>(BookKeeper.java:177)
        at org.apache.bookkeeper.client.BookKeeper.<init>(BookKeeper.java:147)
        at org.apache.hadoop.contrib.bkjournal.BookKeeperJournalManager.<init>(BookKeeperJournalManager.java:189)
        ... 11 more

Issue Links

• depends upon: HDFS-3474 Cleanup Exception handling in BookKeeper journal manager