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https://issues.apache.org/jira/browse/HDFS-4114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14315035#comment-14315035
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Tsz Wo Nicholas Sze commented on HDFS-4114:
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Sure, let's add a Spi interface for namenode. I am happy to help with my
experience on creating the FsDatasetSpi interface for datanode.
Then, let's remove the implementation code from BackupNode and keep the method
signatures. I will post a patch.
> Remove the BackupNode and CheckpointNode from trunk
> ---------------------------------------------------
>
> Key: HDFS-4114
> URL: https://issues.apache.org/jira/browse/HDFS-4114
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Eli Collins
> Assignee: Suresh Srinivas
> Attachments: HDFS-4114.000.patch, HDFS-4114.001.patch, HDFS-4114.patch
>
>
> Per the thread on hdfs-dev@ (http://s.apache.org/tMT) let's remove the
> BackupNode and CheckpointNode.
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