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From "Chao Shi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CRUNCH-345) Force materialization of PCollections prior to multi reduce sorts
Date Mon, 17 Feb 2014 06:41:21 GMT

    [ https://issues.apache.org/jira/browse/CRUNCH-345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13902998#comment-13902998
] 

Chao Shi commented on CRUNCH-345:
---------------------------------

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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