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https://issues.apache.org/jira/browse/PIG-856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich resolved PIG-856.
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Resolution: Won't Fix
We tried reducing the number of replicas and the performance actually degraded
probably because there were fewer places to read the data from.
> PERFORMANCE: reduce number of replicas
> --------------------------------------
>
> Key: PIG-856
> URL: https://issues.apache.org/jira/browse/PIG-856
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.3.0
> Reporter: Olga Natkovich
>
> Currently Pig uses the default number of replicas between MR jobs. Currently,
> the number is 3. Given the temp nature of the data, we should never need more
> than 2 and should explicitely set it to improve performance and to be nicer
> to the name node.
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