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Posted to common-issues@hadoop.apache.org by "Eli Collins (JIRA)" <ji...@apache.org> on 2012/05/08 23:15:48 UTC
[jira] [Updated] (HADOOP-8304) DNSToSwitchMapping should add
interface to resolve individual host besides a list of host
[ https://issues.apache.org/jira/browse/HADOOP-8304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eli Collins updated HADOOP-8304:
--------------------------------
Resolution: Not A Problem
Status: Resolved (was: Patch Available)
Cool, closing this one as won't fix. Thanks for filing a separate jira, please link it in here.
> 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-V2.patch, HADOOP-8304-V2.patch, 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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