Walter Su created HDFS-8338:
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Summary: SimulatedFSDataset support multiple storages/volumes
Key: HDFS-8338
URL: https://issues.apache.org/jira/browse/HDFS-8338
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Walter Su
Assignee: Walter Su
Priority: Minor
Some tests(like Mover/Balancer) move block among storages.
The tests use FsDatasetImpl because SimulatedFSDataset doesn't support multiple
storages.
The tests can be faster if they utilize SimulatedFSDataset, only if
SimulatedFSDataset support multiple storages.
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