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From "Josh Wills (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CRUNCH-433) Add support for reading specific/reflect data from an Avro MR file
Date Sun, 06 Jul 2014 19:18:34 GMT

    [ https://issues.apache.org/jira/browse/CRUNCH-433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14053198#comment-14053198
] 

Josh Wills commented on CRUNCH-433:
-----------------------------------

+1 for the corrected patch, with one request: that BaseAvroTableType be package-scoped instead
of public if at all possible.

> Add support for reading specific/reflect data from an Avro MR file
> ------------------------------------------------------------------
>
>                 Key: CRUNCH-433
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-433
>             Project: Crunch
>          Issue Type: New Feature
>            Reporter: Gabriel Reid
>            Assignee: Gabriel Reid
>         Attachments: CRUNCH-433.patch
>
>
> An Avro Key/Value file written via raw MapReduce contains records that follow the schema
generated by the org.apache.avro.hadoop.io.AvroKeyValue class. 
> If these files contain specific or reflection-based records, there is currently no easy
way to read them in as specific or reflection records. Using the basic public Crunch APIs,
they can only be read as generic records (that also contain generic records).
> A method should be added to the Avros class which allows specifying specific PTypes to
be used for reading the underlying data types within a raw MR output file.
> Link to related discussion that inspired this ticket on the user list: http://s.apache.org/es



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