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https://issues.apache.org/jira/browse/HDFS-2084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13052360#comment-13052360
]
Vitalii Tymchyshyn commented on HDFS-2084:
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I dont know how does it happen, but it does often for me. I have a copy of
namenode state that produces this problem on start I can share.
In general, as for me, it would be great to have an option to perform a
checkpoint skipping invalid records of any kind. Because now any such record
make namenode unusable on restart and with an option you will at most loose a
bit of information.
> Sometimes backup node/secondary name node stops with exception
> --------------------------------------------------------------
>
> Key: HDFS-2084
> URL: https://issues.apache.org/jira/browse/HDFS-2084
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.21.0
> Environment: FreeBSD
> Reporter: Vitalii Tymchyshyn
> Attachments: patch.diff
>
>
> 2011-06-17 11:43:23,096 ERROR
> org.apache.hadoop.hdfs.server.namenode.Checkpointer: Throwable Exception in
> doCheckpoint:
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetTimes(FSDirectory.java:1765)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetTimes(FSDirectory.java:1753)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadEditRecords(FSEditLog.java:708)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:411)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:378)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1209)
> at
> org.apache.hadoop.hdfs.server.namenode.BackupStorage.loadCheckpoint(BackupStorage.java:158)
> at
> org.apache.hadoop.hdfs.server.namenode.Checkpointer.doCheckpoint(Checkpointer.java:243)
> at
> org.apache.hadoop.hdfs.server.namenode.Checkpointer.run(Checkpointer.java:141)
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