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From "Gabriel Reid (JIRA)" <j...@apache.org>
Subject [jira] [Work started] (CRUNCH-13) Partitioner crash in pipelines containing reflection-based Avro data
Date Thu, 12 Jul 2012 07:10:33 GMT

     [ https://issues.apache.org/jira/browse/CRUNCH-13?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on CRUNCH-13 started by Gabriel Reid.

> Partitioner crash in pipelines containing reflection-based Avro data
> --------------------------------------------------------------------
>
>                 Key: CRUNCH-13
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-13
>             Project: Crunch
>          Issue Type: Bug
>    Affects Versions: 0.3.0
>            Reporter: Gabriel Reid
>            Assignee: Gabriel Reid
>              Labels: avro, reflection
>             Fix For: 0.3.0
>
>         Attachments: CRUNCH-13.patch
>
>
> When using reflection-based Avro schemas, the default (hash-based) partitioner crashes
due to GenericData.Records not being able to calculate a hash code for reflection-based data.
This means that any pipeline using Avro reflection data cannot do a group by key on a PCollection
(as this involves a reducer which involves the partitioner).

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