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https://issues.apache.org/jira/browse/CRUNCH-345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13902998#comment-13902998
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Chao Shi commented on CRUNCH-345:
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Yes, I was hitting the same problem when developing HFile-loading tests. It is
much slower and harder to debug. Could we request such feature to upstream
projects (e.g. MRUnit)?
> Force materialization of PCollections prior to multi reduce sorts
> -----------------------------------------------------------------
>
> Key: CRUNCH-345
> URL: https://issues.apache.org/jira/browse/CRUNCH-345
> Project: Crunch
> Issue Type: Bug
> Components: MapReduce Patterns
> Affects Versions: 0.9.0, 0.8.2
> Reporter: Josh Wills
> Attachments: CRUNCH-345.patch
>
>
> [~jgmath2000] reported that multi-reducer sort operations in the Sort library
> fail unless the input PCollection is materialized prior to executing the sort.
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