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https://issues.apache.org/jira/browse/HDFS-12818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erik Krogen updated HDFS-12818:
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Attachment: HDFS-12818.005.patch
v005 patch fixes the last test errors; because {{SimulatedFSDataset}} now bases
the number of storages off of the configuration it is supplied with, some tests
needed to be changed to expect two storages (the default) rather than just one.
Should be good to go now.
> Support multiple storages in DataNodeCluster / SimulatedFSDataset
> -----------------------------------------------------------------
>
> Key: HDFS-12818
> URL: https://issues.apache.org/jira/browse/HDFS-12818
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, test
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Minor
> Attachments: HDFS-12818.000.patch, HDFS-12818.001.patch,
> HDFS-12818.002.patch, HDFS-12818.003.patch, HDFS-12818.004.patch,
> HDFS-12818.005.patch
>
>
> 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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