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From "Aaron T. Myers (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2827) Checkpointing is failing with saveleases found but no entry in namespace.
Date Tue, 24 Jan 2012 06:33:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13191934#comment-13191934
] 

Aaron T. Myers commented on HDFS-2827:
--------------------------------------

Hey Uma, I confirmed that this issue does exist on Linux as well, but in doing so I also confirmed
that this is not specific to the HA branch or the Standby NN. As such, I'm going to convert
this to a top-level issue.

I'll attach a patch in a moment with a test case that demonstrates the issue.
                
> Checkpointing is failing with saveleases found but no entry in namespace.
> -------------------------------------------------------------------------
>
>                 Key: HDFS-2827
>                 URL: https://issues.apache.org/jira/browse/HDFS-2827
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: HA branch (HDFS-1623)
>         Environment: Dev env - Windows
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>         Attachments: HDFS-2827-test.patch
>
>
> When i execute the following operations and wait for checkpoint to complete.
> fs.mkdirs(new Path("/test1"));
> FSDataOutputStream create = fs.create(new Path("/test/abc.txt")); //dont close
> fs.rename(new Path("/test/"), new Path("/test1/"));
> Check-pointing is failing with the following exception.
> 2012-01-23 15:03:14,204 ERROR namenode.FSImage (FSImage.java:run(795)) - Unable to save
image for E:\HDFS-1623\hadoop-hdfs-project\hadoop-hdfs\build\test\data\dfs\name3
> java.io.IOException: saveLeases found path /test1/est/abc.txt but no matching entry in
namespace.[/test1/est/abc.txt]
> 	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.saveFilesUnderConstruction(FSNamesystem.java:4336)
> 	at org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Saver.save(FSImageFormat.java:588)
> 	at org.apache.hadoop.hdfs.server.namenode.FSImage.saveFSImage(FSImage.java:761)
> 	at org.apache.hadoop.hdfs.server.namenode.FSImage$FSImageSaver.run(FSImage.java:789)
> 	at java.lang.Thread.run(Unknown Source)

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