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Posted to dev@pig.apache.org by "Olga Natkovich (JIRA)" <ji...@apache.org> on 2009/11/23 18:26:45 UTC

[jira] Resolved: (PIG-856) PERFORMANCE: reduce number of replicas

     [ https://issues.apache.org/jira/browse/PIG-856?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Olga Natkovich resolved PIG-856.
--------------------------------

    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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