[jira] [Commented] (CRUNCH-499) DoFns.detach(...) does not propogate context to wrapped DoFn

["Gabriel Reid (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CRUNCH-499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14314290#comment-14314290 ] 

Gabriel Reid commented on CRUNCH-499:
-------------------------------------

+1

> DoFns.detach(...) does not propogate context to wrapped DoFn
> ------------------------------------------------------------
>
>                 Key: CRUNCH-499
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-499
>             Project: Crunch
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.12.0
>            Reporter: David Whiting
>            Assignee: Josh Wills
>            Priority: Minor
>             Fix For: 0.12.0
>
>         Attachments: 0001-Propogate-context-to-wrapped-DoFn-in-DoFns.detach.patch
>
>
> When wrapping a DoFn in DoFns.detach(), the context does not get passed down to the enclosing DoFn when setContext is invoked, meaning counter incrementing and other features which rely on the context being available don't work as expected. This needs to be patched to make setContext change the context of both the wrapper and the delegate DoFn.



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