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From "Josh Wills (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (CRUNCH-248) SingleUseIterable exceptions mask CrunchRuntimeExceptions thrown in the reducer
Date Wed, 07 Aug 2013 18:35:47 GMT

     [ https://issues.apache.org/jira/browse/CRUNCH-248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Josh Wills resolved CRUNCH-248.
-------------------------------

    Resolution: Fixed

Committed to master.
                
> SingleUseIterable exceptions mask CrunchRuntimeExceptions thrown in the reducer
> -------------------------------------------------------------------------------
>
>                 Key: CRUNCH-248
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-248
>             Project: Crunch
>          Issue Type: Bug
>          Components: Core
>            Reporter: Josh Wills
>            Assignee: Josh Wills
>             Fix For: 0.8.0
>
>         Attachments: CRUNCH-248.patch
>
>
> If a DoFn on the reducer throws a CrunchRuntimeException, the record you were processing
when the exception was thrown. Since the record is usually some instance of Pair<K, Iterable<V>>
and the Iterable is single-use, attempting to write the record to the log causes an exception
to be thrown when we try to render the data in the Iterable by calling its iterator() method
for the second time.

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