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https://issues.apache.org/jira/browse/HDFS-15087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17016871#comment-17016871
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Jinglun commented on HDFS-15087:
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Hi everyone, any further comments? Please let me know your thoughts, thanks !
> RBF: Balance/Rename across federation namespaces
> ------------------------------------------------
>
> Key: HDFS-15087
> URL: https://issues.apache.org/jira/browse/HDFS-15087
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: 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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