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https://issues.apache.org/jira/browse/HDFS-5425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13818076#comment-13818076
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Uma Maheswara Rao G commented on HDFS-5425:
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Thanks for the update. Actually test is writing data and closing file and
appending it o reopen.
Simple create itself will reproduce this. see below.
{code}
hdfs.create(bar, true);
//DFSTestUtil.createFile(hdfs, bar, BLOCKSIZE, REPL, SEED);
// reopen the file
//hdfs.append(bar);
{code}
I will update this and commit by EOD, if there are no objections on this patch.
+1 from me. (will update my comment on commit)
> Renaming underconstruction file with snapshots can make NN failure on restart
> -----------------------------------------------------------------------------
>
> Key: HDFS-5425
> URL: https://issues.apache.org/jira/browse/HDFS-5425
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.2.0
> Reporter: sathish
> Assignee: Vinay
> Attachments: HDFS-5425.patch, HDFS-5425.patch
>
>
> I faced this When i am doing some snapshot operations like
> createSnapshot,renameSnapshot,i restarted my NN,it is shutting down with
> exception,
> 2013-10-24 21:07:03,040 FATAL
> org.apache.hadoop.hdfs.server.namenode.NameNode: Exception in namenode join
> java.lang.IllegalStateException
> at
> com.google.common.base.Preconditions.checkState(Preconditions.java:133)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot$ChildrenDiff.replace(INodeDirectoryWithSnapshot.java:82)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot$ChildrenDiff.access$700(INodeDirectoryWithSnapshot.java:62)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot$DirectoryDiffList.replaceChild(INodeDirectoryWithSnapshot.java:397)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot$DirectoryDiffList.access$900(INodeDirectoryWithSnapshot.java:376)
> at
> org.apache.hadoop.hdfs.server.namenode.snapshot.INodeDirectoryWithSnapshot.replaceChild(INodeDirectoryWithSnapshot.java:598)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedReplaceINodeFile(FSDirectory.java:1548)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.replaceINodeFile(FSDirectory.java:1537)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.loadFilesUnderConstruction(FSImageFormat.java:855)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader.load(FSImageFormat.java:350)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:910)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:899)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:751)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:720)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:266)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:784)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:563)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:422)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:472)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:670)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:655)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1245)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1311)
> 2013-10-24 21:07:03,050 INFO org.apache.hadoop.util.ExitUtil: Exiting with
> status 1
> 2013-10-24 21:07:03,052 INFO org.apache.hadoop.hdfs.server.namenode.NameNode:
> SHUTDOWN_MSG:
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