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https://issues.apache.org/jira/browse/HDFS-867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-867.
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Resolution: Fixed
I'm going to close this as fixed: using either a multi-level topology or just
within the network topology, one can build the power topology into the system.
(And, in practice, this is what many of us do...)
> Add a PowerTopology class to aid replica placement and enhance availability
> of blocks
> --------------------------------------------------------------------------------------
>
> Key: HDFS-867
> URL: https://issues.apache.org/jira/browse/HDFS-867
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Jeff Hammerbacher
> Priority: Minor
>
> Power outages are a common reason for a DataNode to become unavailable.
> Having a data structure to represent to the power topology of your data
> center can be used to implement a power-aware replica placement policy.
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