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https://issues.apache.org/jira/browse/HBASE-12557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14221641#comment-14221641
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Ted Yu commented on HBASE-12557:
--------------------------------

Good catch, Andrew. Corrected the typo.

As for the test, I am looking among related hadoop tests to see if I can find 
something.

> Introduce timeout mechanism for IP to rack resolution
> -----------------------------------------------------
>
>                 Key: HBASE-12557
>                 URL: https://issues.apache.org/jira/browse/HBASE-12557
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: 12557-v1.txt
>
>
> Config parameter, "hbase.util.ip.to.rack.determiner", determines the class 
> which does IP to rack resolution.
> The actual resolution may be lengthy.
> This JIRA is continuation of HBASE-12554 where a mock DNSToSwitchMapping is 
> used for rack resolution.
> A timeout parameter, "hbase.ip.to.rack.determiner.timeout", is proposed whose 
> value governs the duration which RackManager waits before rack resolution is 
> stopped.



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