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https://issues.apache.org/jira/browse/PIG-3648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheolsoo Park updated PIG-3648:
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Status: Patch Available (was: Open)
Actually, this turned out to be helpful. Since I am not change the default
behavior (i.e. the number of sampled rows per task is still set to 100), I
think we can commit this to 0.13. Does anyone disagree?
> Make the sample size for RandomSampleLoader configurable
> --------------------------------------------------------
>
> Key: PIG-3648
> URL: https://issues.apache.org/jira/browse/PIG-3648
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Reporter: Cheolsoo Park
> Assignee: Cheolsoo Park
> Priority: Minor
> Fix For: 0.13.0
>
> Attachments: PIG-3648-1.patch
>
>
> Pig uses RandomSampleLoader for range partitioning in order-by. But since the
> sample size is hardcoded as 100, volatility in the variance of the results
> increases when sorting a large number of rows (e.g. 10M+ per task).
> It would be nice if the sample size could be configurable via Pig properties.
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