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Doug Cutting commented on HADOOP-6685:
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> What would a compromise solution look like?
I would be willing to entertain non-Map<String,String> representations of serialization
metadata, if:
- it didn't create a core dependency on ProtocolBuffers
- it didn't extend SequenceFile
I am -1 on this patch as-is.
> Change the generic serialization framework API to use serialization-specific bytes instead
of Map<String,String> for configuration
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-6685
> URL: https://issues.apache.org/jira/browse/HADOOP-6685
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.22.0
>
> Attachments: libthrift.jar, serial.patch, serial4.patch, serial6.patch, serial7.patch,
SerializationAtSummit.pdf
>
>
> Currently, the generic serialization framework uses Map<String,String> for the
serialization specific configuration. Since this data is really internal to the specific serialization,
I think we should change it to be an opaque binary blob. This will simplify the interface
for defining specific serializations for different contexts (MAPREDUCE-1462). It will also
move us toward having serialized objects for Mappers, Reducers, etc (MAPREDUCE-1183).
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