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From Matt Tanquary <matt.tanqu...@gmail.com>
Subject Bounced cluster - won't restart
Date Wed, 27 Oct 2010 17:15:30 GMT
My small cluster was working fine. I bounced it just because I've been
running a lot of MR jobs and wanted to take down a couple nodes, balance,
etc. But when I attempt to start it, I get this in the namenode log. Any
ideas what to look out for?


2010-10-27 10:11:11,560 INFO
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered
FSNamesystemStatusMBean
2010-10-27 10:11:11,887 INFO org.apache.hadoop.hdfs.server.common.Storage:
java.io.IOException: Input/output error
        at sun.nio.ch.FileChannelImpl.lock0(Native Method)
        at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:881)
        at java.nio.channels.FileChannel.tryLock(FileChannel.java:962)
        at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:527)
        at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:505)
        at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:363)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:285)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:88)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:312)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:293)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:224)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:306)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1006)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1015)

2010-10-27 10:11:11,891 ERROR
org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem
initialization failed.
java.io.IOException: Input/output error
        at sun.nio.ch.FileChannelImpl.lock0(Native Method)
        at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:881)
        at java.nio.channels.FileChannel.tryLock(FileChannel.java:962)
        at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:527)
        at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:505)
        at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:363)
        at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:285)
        at
org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:88)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:312)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:293)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:224)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:306)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1006)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1015)


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