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Posted to common-issues@hadoop.apache.org by "Doug Cutting (JIRA)" <ji...@apache.org> on 2010/03/25 21:43:27 UTC

[jira] Updated: (HADOOP-6660) add wrapper for Avro data

     [ https://issues.apache.org/jira/browse/HADOOP-6660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Cutting updated HADOOP-6660:
---------------------------------

    Description: 
To permit passing Avro data through MapReduce we can add a wrapper class and serialization for it.


  was:
To permit passing Avro data through MapReduce we can add a wrapper class that implements Writable.


        Summary: add wrapper for Avro data  (was: add Writable wrapper for Avro data)

On futher thought, the wrapper need not implement Writable.  While WritableSerialization would be able to correctly write AvroValue instances, it could not construct them and hence could not read them correctly.  Instead this should define a new Serialization, AvroValueSerialization, included by default in io.serializations, that accepts instances of AvroValue.

> add wrapper for Avro data
> -------------------------
>
>                 Key: HADOOP-6660
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6660
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io
>            Reporter: Doug Cutting
>             Fix For: 0.22.0
>
>
> To permit passing Avro data through MapReduce we can add a wrapper class and serialization for it.

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