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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-839) The NameNode should forward block reports to BackupNode
Date Thu, 21 Jan 2010 01:04:54 GMT

    [ https://issues.apache.org/jira/browse/HDFS-839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12803098#action_12803098
] 

Todd Lipcon commented on HDFS-839:
----------------------------------

I think before Konstantin's #1 failover, there's a #0.5 -- the lease recovery of current writers
is very nice to have, but there's some use for manual fast failover without this functionality.

> The NameNode should forward block reports to BackupNode
> -------------------------------------------------------
>
>                 Key: HDFS-839
>                 URL: https://issues.apache.org/jira/browse/HDFS-839
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>
> The BackupNode (via HADOOP-4539) receives a stream of transactions from NameNode. However,
the BackupNode does not have block locations of blocks. It would be nice if the NameNode can
forward all block reports (that it receives from DataNodes) to the BackupNode.

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