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https://issues.apache.org/jira/browse/HADOOP-8304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13262326#comment-13262326
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Junping Du commented on HADOOP-8304:
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Hi Eli,
Thanks for suggestion. Will do that soon.
Best,
Junping
> DNSToSwitchMapping should add interface to resolve individual host besides a
> list of host
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-8304
> URL: https://issues.apache.org/jira/browse/HADOOP-8304
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 1.0.0, 2.0.0
> Reporter: Junping Du
> Assignee: Junping Du
> Fix For: 2.0.0
>
> Attachments: HADOOP-8304.patch
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> DNSToSwitchMapping now has only one API to resolve a host list: public
> List<String> resolve(List<String> names). But the two major caller:
> RackResolver.resolve() and DatanodeManager.resolveNetworkLocation() are
> taking single host name but have to wrapper it to an single entry ArrayList.
> This is not necessary especially the host has been cached before.
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