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  1. Hadoop HDFS
  2. HDFS-2007

Backupnode downloading image/edits from Namenode at every checkpoint ..

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Details

    • Bug
    • Status: Resolved
    • Minor
    • Resolution: Duplicate
    • None
    • None
    • namenode
    • None
    • backupnode,checkpointing

    Description

      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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              jacsparrow SreeHari
              jacsparrow SreeHari
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                Updated:
                Resolved: