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https://issues.apache.org/jira/browse/CRUNCH-323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13876021#comment-13876021
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Josh Wills commented on CRUNCH-323:
-----------------------------------
+1, nice explanation of the details that motivate the functionality.
Couple of nits-- there's an "it's" that needs to be "its", and in for the
formatting of the pre-code block to work correctly, you need to swap in <
and > for the PCollection<T> and Emitter<T>.
> Add a section on getDetachedValue to the user guide
> ---------------------------------------------------
>
> Key: CRUNCH-323
> URL: https://issues.apache.org/jira/browse/CRUNCH-323
> Project: Crunch
> Issue Type: Improvement
> Components: Site
> Reporter: Gabriel Reid
> Assignee: Gabriel Reid
> Priority: Minor
> Attachments: getDetachedValue.patch
>
>
> The use of the PType#getDetachedValue is a useful bit of information, and a
> common gotcha when working with Crunch and MapReduce. A section explaining
> how to deal with retaining references within a DoFn should be added to the
> user guide.
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