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https://issues.apache.org/jira/browse/HADOOP-6685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12933647#action_12933647
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Arun C Murthy commented on HADOOP-6685:
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{quote}
I do not agree that an array of bytes is a better way to represent
serialization metadata. (I stated this in the first comment on this issue.) I
prefer the solutions that were in HADOOP-6165 and HADOOP-6420. My objections
are:
{quote}
Doug, thanks for re-voicing your concerns.
The primary objection to HADOOP-6165 was it's implementation and we had a very,
very drawn out discussion in MAPREDUCE-1126. The primary reason for taking the
current approach was to support serialization in a more explicit, type-safe
manner.
We have had several discussions on this same topic and I do not see how we can
make progress on this anymore. I think we should either agree on the approach
or veto this and stop work on this altogether.
As has been noted before, progress on this work will greatly benefit Map-Reduce
by supporting serialized job descriptions: MAPREDUCE-1183.
{quote}
I also will re-voice my objection that the current patch makes a large number
of changes beyond changing the format of serialization metadata. We should
restrict the patch to the description, and change other things in other issues.
{quote}
Fair point. Using a development branch for this would have been the right
approach. We can still do that. However, this patch has progressed to the point
that it would be ready to merge-in to the mainline.
Again, I think we should, as a community, decide on the direction and either
commit this or stop working on it.
I do not see how arguing further helps either the atmosphere or the community.
> 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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