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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4114) Remove the BackupNode and CheckpointNode from trunk
Date Tue, 10 Feb 2015 01:58:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14313367#comment-14313367
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Tsz Wo Nicholas Sze commented on HDFS-4114:
-------------------------------------------

I see.  What you want actually is some kind of interface for namenode, like FsDatasetSpi for
datanode.  I think it is a good idea.

FsDatasetSpi does have ExternalDatasetImpl (as a test) in order to guarantee that all the
classes necessary to implement the interface are (and remain) publicly accessible.  How about
we keep on the method signature and remove all the BackupNode implementation, i.e. keep empty
methods as ExternalDatasetImpl?  Then, it is much easier to maintain.

> 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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