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https://issues.apache.org/jira/browse/CRUNCH-351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13909451#comment-13909451
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Josh Wills commented on CRUNCH-351:
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Yeah, that's a vastly better idea. Obviously, we would no longer have identical
values from the same PCollection on the same shard, but there isn't anything in
Shard's contract that guarantees that. [~gabriel.reid], what do you think?
> Improve performance of Shard#shard on large records
> ---------------------------------------------------
>
> Key: CRUNCH-351
> URL: https://issues.apache.org/jira/browse/CRUNCH-351
> Project: Crunch
> Issue Type: Improvement
> Reporter: Chao Shi
> Assignee: Chao Shi
> Attachments: crunch-351.patch
>
>
> This avoids sorting on the input data, which may be long and make
> shuffle phase slow. The improvement is to sort on pseudo-random numbers.
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