Backupnode downloading image/edits from Namenode at every checkpoint ..
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Key: HDFS-2007
URL: https://issues.apache.org/jira/browse/HDFS-2007
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Reporter: Hari
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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