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https://issues.apache.org/jira/browse/HADOOP-6420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790449#action_12790449
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Chris Douglas commented on HADOOP-6420:
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bq. That could be fun to boostrap. DefaultStringifier uses SerializationFactory
which could use DefaultStringifier to find the serializer's metadata. [...]
This is not what I'm talking about. The Stringifier interface obviously doesn't
require something as general as DefaultStringifier and nobody has argued that a
Map<String,String> is wrong. The issue is whether the current patch offers the
best approach to render the metadata to the serialization; its superiority to
big, blobby stuff is not obvious. By noting that efforts to push non-primitive
types into Configuration has a precedent and an interface, I did not intend to
advocate for a pluggable meta-serialization layer on top of Configuration.
bq. Note that we don't need to filter the entire configuration unless someone
iterates over the subset. [...]
Returning a Map from Configuration and restricting its range is cleaner and
easier to explain. If iteration isn't required, then this approach sounds good
to me.
bq. If we did need to support iteration, then perhaps we could change
Configuration to use treemap, but that might open other cans of worms.
Agreed. After seeing MAPREDUCE-1183, I'm hoping that fewer components will rely
on this class.
> String-to-String Maps should be embeddable in Configuration
> -----------------------------------------------------------
>
> Key: HADOOP-6420
> URL: https://issues.apache.org/jira/browse/HADOOP-6420
> Project: Hadoop Common
> Issue Type: Improvement
> Components: conf
> Reporter: Aaron Kimball
> Assignee: Aaron Kimball
> Attachments: HADOOP-6420.2.patch, HADOOP-6420.3.patch,
> HADOOP-6420.4.patch, HADOOP-6420.patch
>
>
> Per MAPREDUCE-1126, we need to be able to take a map of (key, value) pairs
> and embed that inside a Configuration object.
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