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https://issues.apache.org/jira/browse/PIG-3648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13863749#comment-13863749
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Rohini Palaniswamy commented on PIG-3648:
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Is memory a big concern really w.r.t to number of samples? I haven't checked
but I am assuming we will only have the orderby key in the sample and not
entire tuple and that would not amount to much in terms of occupying memory. Is
that wrong?
> 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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