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Posted to dev@crunch.apache.org by "Chao Shi (JIRA)" <ji...@apache.org> on 2014/02/22 11:40:19 UTC

[jira] [Updated] (CRUNCH-351) Improve performance of Shard#shard on large records

     [ https://issues.apache.org/jira/browse/CRUNCH-351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chao Shi updated CRUNCH-351:
----------------------------

    Attachment: crunch-351.patch

> 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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