Jinglun created HDFS-15087:
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Summary: 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
Attachments: 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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