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https://issues.apache.org/jira/browse/HDFS-15087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17134832#comment-17134832
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Yiqun Lin commented on HDFS-15087:
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Hi [~umamaheswararao] and others, I'd like to share current status about
HDFS-15294 and maybe some others also want to know this feature.
Now [~LiJinglun] almost completed the majority implementation and we are
actively working for the one core subtask HDFS-15346. There are still some
remaining work like documentation.
And after discussed with [~LiJinglun] about this feature design, we are agreed
that let this tool become a common balance tool not only used for RBF mode, but
also can be used in normal federation clusters.
Please share your wonderful thoughts/comments on HDFS-15294 if you are
interested in this, :).
> RBF: Balance/Rename across federation namespaces
> ------------------------------------------------
>
> Key: HDFS-15087
> URL: https://issues.apache.org/jira/browse/HDFS-15087
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Jinglun
> Assignee: Jinglun
> Priority: Major
> Attachments: HDFS-15087.initial.patch, HFR_Rename Across Federation
> Namespaces.pdf
>
>
> The Xiaomi storage team has developed a new feature called HFR(HDFS
> Federation Rename) that enables us to do balance/rename across federation
> namespaces. The idea is to first move the meta to the dst NameNode and then
> link all the replicas. It has been working in our largest production cluster
> for 2 months. We use it to balance the namespaces. It turns out HFR is fast
> and flexible. The detail could be found in the design doc.
> Looking forward to a lively discussion.
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