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Posted to dev@crunch.apache.org by "Gabriel Reid (JIRA)" <ji...@apache.org> on 2013/04/05 21:35:16 UTC

[jira] [Updated] (CRUNCH-191) Object reuse bug in o.a.c.lib.Distinct

     [ https://issues.apache.org/jira/browse/CRUNCH-191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabriel Reid updated CRUNCH-191:
--------------------------------

    Attachment: CRUNCH-191.patch

Patch to resolve issue.
                
> Object reuse bug in o.a.c.lib.Distinct
> --------------------------------------
>
>                 Key: CRUNCH-191
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-191
>             Project: Crunch
>          Issue Type: Bug
>            Reporter: Gabriel Reid
>         Attachments: CRUNCH-191.patch
>
>
> A DoFn in the o.a.c.lib.Distinct class holds on to values in a local buffer, but doesn't deep copy the values where necessary. This can lead to unexpected issues with the well-known object-reuse bug, particularly if the same value is used by multiple DoFns.

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