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https://issues.apache.org/jira/browse/HDFS-3202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247400#comment-13247400
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Suresh Srinivas commented on HDFS-3202:
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bq. Suresh, if you feel strongly about removing one of the NamespaceInfo
constructor variants, I'd be happy to do that in a follow-up JIRA.
Just wanted to avoid the many variants of constructors and methods. Our code is
replete with this :-) But no issues with the patch though.
> NamespaceInfo PB translation drops build version
> ------------------------------------------------
>
> Key: HDFS-3202
> URL: https://issues.apache.org/jira/browse/HDFS-3202
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 2.0.0
> Reporter: Aaron T. Myers
> Assignee: Aaron T. Myers
> Fix For: 2.0.0
>
> Attachments: HDFS-3202.patch
>
>
> The PBHelper#convert(NamespaceInfoProto) function doesn't pass the build
> version from the NamespaceInfoProto to the created NamespaceInfo object.
> Instead, the NamespaceInfo constructor gets the build version using the
> static function Storage#getBuildVersion. DNs also use this static function to
> determine their own build version. This means that the check the DN does to
> compare its own build version to that of the NN always passes, regardless of
> what build version exists on the NN.
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