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https://issues.apache.org/jira/browse/HDFS-1904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hairong Kuang resolved HDFS-1904.
---------------------------------
Resolution: Duplicate
> Secondary Namenode dies when a mkdir on a non-existent parent directory is run
> ------------------------------------------------------------------------------
>
> Key: HDFS-1904
> URL: https://issues.apache.org/jira/browse/HDFS-1904
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.23.0
> Environment: Linux
> Reporter: Ravi Prakash
> Priority: Blocker
>
> Steps to reproduce:
> 1. Configure secondary namenode with {{fs.checkpoint.period}} set to a small
> value (eg 3 seconds)
> 2. Format filesystem and start HDFS
> 3. hadoop fs -mkdir /foo/bar ; sleep 5 ; echo | hadoop fs -put - /foo/bar/baz
> 2NN will crash with the following trace on the next checkpoint. The primary
> NN also crashes on next restart
> 11/05/10 15:19:28 ERROR namenode.SecondaryNameNode: Throwable Exception in
> doCheckpoint:
> 11/05/10 15:19:28 ERROR namenode.SecondaryNameNode:
> java.lang.NullPointerException: Panic: parent does not exist
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1693)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1707)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.addNode(FSDirectory.java:1544)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedAddFile(FSDirectory.java:288)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:234)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:116)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:62)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:723)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.doMerge(SecondaryNameNode.java:720)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.access$500(SecondaryNameNode.java:610)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doMerge(SecondaryNameNode.java:487)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:448)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doWork(SecondaryNameNode.java:312)
> at
> org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:276)
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