[ https://issues.apache.org/jira/browse/HDFS-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

SreeHari resolved HDFS-2007.

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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postedMay 27, '11 at 10:32a
activeDec 20, '11 at 5:13a

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