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https://issues.apache.org/jira/browse/MAPREDUCE-3813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated MAPREDUCE-3813:
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Description: With the current code, during task creation, we
repeatedly resolve hosts and RackResolver doesn't cache any of the results.
Caching will improve performance.
Affects Version/s: 0.23.0
Fix Version/s: 0.23.1
Assignee: Vinod Kumar Vavilapalli
> RackResolver should maintain a cache to avoid repetitive lookups.
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-3813
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3813
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: mrv2, performance
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.23.1
>
>
> With the current code, during task creation, we repeatedly resolve hosts and
> RackResolver doesn't cache any of the results. Caching will improve
> performance.
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