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https://issues.apache.org/jira/browse/HDFS-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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SreeHari resolved HDFS-2007.
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Resolution: Duplicate
> Backupnode downloading image/edits from Namenode at every checkpoint ..
> ------------------------------------------------------------------------
>
> Key: HDFS-2007
> URL: https://issues.apache.org/jira/browse/HDFS-2007
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Reporter: SreeHari
> Assignee: SreeHari
> Priority: Minor
>
> After the fix for HDFS-903 ( md5 verification of fsimage ) , Backupnode is
> downloading the image & edit files from namenode everytime since the
> difference in checkpoint time is always maintined b/w Namenode and
> Backupnode .
> This happens since Namenode is resetting its checkpoint time after every
> checkpoint since we are ignoring renewCheckpointTime and passing true
> explicitly to rollFsimage during endcheckpoint , while Backupnode is setting
> its checkpointtime to whatever it got from the namenode during
> startcheckpoint()
> Thus , checkpointtimes will be different during the next checkpoint and ll
> cause the image to be downloaded again ..
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