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From "Doug Cutting (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AVRO-593) Avro mapreduce apis incompatible with hadoop 0.20.2
Date Tue, 21 Feb 2012 22:52:49 GMT

    [ https://issues.apache.org/jira/browse/AVRO-593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13213071#comment-13213071
] 

Doug Cutting commented on AVRO-593:
-----------------------------------

> Is it possible to move AvroSequenceFile under o.a.a ?

I discussed that above.  We could move it, but we'd still need a shim in o.a.h.io, since the
subclass accesses package-private bits.

> if we need to produce two otherwise identical modules in a build – one 0.23.x + compatible
and one for the 0.20 / 0.22 / 1.0 users

The nested Context classes in mapreduce's Mapper and Reducer went from abstract classes to
interfaces (MAPREDUCE-954), requiring re-compilation of code that references these.  But the
mapreduce support added here does not reference these.  So I think we're spared.
                
> Avro mapreduce apis incompatible with hadoop 0.20.2
> ---------------------------------------------------
>
>                 Key: AVRO-593
>                 URL: https://issues.apache.org/jira/browse/AVRO-593
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.3.2, 1.3.3
>         Environment: Avro 1.3.3, Hadoop 0.20.2
>            Reporter: Steve Severance
>            Assignee: Garrett Wu
>         Attachments: AVRO-593.patch, AVRO-593.patch
>
>
> The avro api's for hadoop use the hadoop mapreduce api that has been deprecated. A new
avro mapreduce api should be implemented for hadoop 0.20 and higher.

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