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https://issues.apache.org/jira/browse/HDFS-1910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Shvachko updated HDFS-1910:
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Attachment: saveImageOnce-v1.1.patch
> when dfs.name.dir and dfs.name.edits.dir are same fsimage will be saved twice
> every time
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-1910
> URL: https://issues.apache.org/jira/browse/HDFS-1910
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 0.21.0
> Reporter: Gokul
> Priority: Minor
> Labels: critical-0.22.0
> Fix For: 0.22.1
>
> Attachments: saveImageOnce-v0.22.patch, saveImageOnce-v1.1.patch
>
>
> when image and edits dir are configured same, the fsimage flushing from
> memory to disk will be done twice whenever saveNamespace is done. this may
> impact the performance of backupnode/snn where it does a saveNamespace during
> every checkpointing time.
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