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https://issues.apache.org/jira/browse/HDFS-2609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon reopened HDFS-2609:
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> DataNode.getDNRegistrationByMachineName can probably be removed or simplified
> -----------------------------------------------------------------------------
>
> Key: HDFS-2609
> URL: https://issues.apache.org/jira/browse/HDFS-2609
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Eli Collins
>
> I noticed this while working on HDFS-1971: The
> {{getDNRegistrationByMachineName}} iterates over block pools to return a
> given block pool's registration object based on its {{machineName}} field.
> But, the machine name for every BPOfferService is identical - they're always
> constructed by just calling {{DataNode.getName}}. All of the call sites for
> this function are from tests, as well. So, maybe it's not necessary, or at
> least it might be able to be simplified or moved to a test method.
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