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https://issues.apache.org/jira/browse/HDFS-12817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe resolved HDFS-12817.
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Resolution: Duplicate
> Support multiple storages in DataNodeCluster / SimulatedFSDataset
> -----------------------------------------------------------------
>
> Key: HDFS-12817
> URL: https://issues.apache.org/jira/browse/HDFS-12817
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, test
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Minor
>
> Currently {{SimulatedFSDataset}} (and thus, {{DataNodeCluster}} with
> {{-simulated}}) only supports a single storage per {{DataNode}}. Given that
> the number of storages can have important implications on the performance of
> block report processing, it would be useful for these classes to support a
> multiple storage configuration.
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