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https://issues.apache.org/jira/browse/HDFS-4114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317093#comment-14317093
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Konstantin Shvachko commented on HDFS-4114:
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Sorry, but I respectfully disagree with this order.
The bindings I referred to in the comment cited above include both the method
signatures, and the methods called in their implementations.
We did try to introduce ConsensusNode as a replacement for BackupNode via
HDFS-6469 and HADOOP-10641 last summer. The initial approach HDFS-6940 was
rejected, but no alternatives were worked out, which is the purpose of
HDFS-7007 now.
Not trying to diverge from the BackupNode topic. But these two issue are
tightly related and important for our common customers.
BTW, the findbugs warning in {{BackupImage}} is now fixed by HDFS-7753.
> 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: Tsz Wo Nicholas Sze
> Attachments: HDFS-4114.000.patch, HDFS-4114.001.patch,
> HDFS-4114.patch, h4114_20150210.patch
>
>
> Per the thread on hdfs-dev@ (http://s.apache.org/tMT) let's remove the
> BackupNode and CheckpointNode.
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