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Posted to hdfs-dev@hadoop.apache.org by "Konstantin Shvachko (Created) (JIRA)" <ji...@apache.org> on 2011/12/17 02:08:30 UTC
[jira] [Created] (HDFS-2698) BackupNode is downloading image from
NameNode for every checkpoint
BackupNode is downloading image from NameNode for every checkpoint
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Key: HDFS-2698
URL: https://issues.apache.org/jira/browse/HDFS-2698
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.22.0
Reporter: Konstantin Shvachko
Assignee: Konstantin Shvachko
BackupNode can make periodic checkpoints without downloading image and edits files from the NameNode, but with just saving the namespace to local disks. This is not happening because NN renews checkpoint time after every checkpoint, thus making its image ahead of the BN's even though they are in sync.
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[jira] [Resolved] (HDFS-2698) BackupNode is downloading image from
NameNode for every checkpoint
Posted by "Konstantin Shvachko (Resolved) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HDFS-2698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Konstantin Shvachko resolved HDFS-2698.
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Resolution: Fixed
Fix Version/s: 0.22.1
Hadoop Flags: Reviewed
I just committed this to branch 0.22
> BackupNode is downloading image from NameNode for every checkpoint
> ------------------------------------------------------------------
>
> Key: HDFS-2698
> URL: https://issues.apache.org/jira/browse/HDFS-2698
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Fix For: 0.22.1
>
> Attachments: rollFSImage.patch, rollFSImage.patch
>
>
> BackupNode can make periodic checkpoints without downloading image and edits files from the NameNode, but with just saving the namespace to local disks. This is not happening because NN renews checkpoint time after every checkpoint, thus making its image ahead of the BN's even though they are in sync.
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