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https://issues.apache.org/jira/browse/PIG-856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721558#action_12721558
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Olga Natkovich commented on PIG-856:
------------------------------------

The number of replicas can be set via dfs.replication parameter in Hadoop's 
JobConf

> 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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