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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-12818.007.patch
Argh, {{TestBalancerWithMultipleNameNodes}} snuck by me because it was timing
out instead of failing. Thanks for the catch [~shv]. Confirmed that all of the
{{TestBalancer*}} tests actually pass locally now with v007 patch.
> 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, HDFS-12818.006.patch, HDFS-12818.007.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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