Tom McCormick created HDFS-16782:
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Summary: RBF Migrate Sub cluster mount point
Key: HDFS-16782
URL: https://issues.apache.org/jira/browse/HDFS-16782
Project: Hadoop HDFS
Issue Type: Improvement
Components: rbf
Reporter: Tom McCormick
The goal is to migrate data from one hdfs volume to another, with zero read
downtime and zero (or near zero) write downtime.
This is a new mount point that will opportunistically write new files to the
new volume with the goal being to reduce the amount of new data created on the
original volume.
Similar to existing RBF subcluster mount points, it knows how to reconcile
files and directories between hdfs volumes.
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