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https://issues.apache.org/jira/browse/MAPREDUCE-980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12757356#action_12757356
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Doug Cutting commented on MAPREDUCE-980:
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> should we change the encoder to json [ ... ]
That was my initial instinct too, but Eric and Owen both indicated to me that
they preferred that we use binary.
Eric's comment is:
https://issues.apache.org/jira/browse/MAPREDUCE-157?focusedCommentId=12745279&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12745279
Owen has indicated this in offline discussions. The idea is that one can
easily use Avro to dump the binary as JSON, but that the binary is smaller and
faster.
It's a trivial change to make if we prefer JSON instead of binary.
> Modify JobHistory to use Avro for serialization instead of raw JSON
> -------------------------------------------------------------------
>
> Key: MAPREDUCE-980
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-980
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Jothi Padmanabhan
> Assignee: Doug Cutting
> Fix For: 0.21.0
>
> Attachments: MAPREDUCE-980.patch, MAPREDUCE-980.patch,
> MAPREDUCE-980.patch, MAPREDUCE-980.patch, MAPREDUCE-980.patch,
> MAPREDUCE-980.patch, MAPREDUCE-980.patch, MAPREDUCE-980.patch,
> MAPREDUCE-980.patch, MAPREDUCE-980.patch
>
>
> MAPREDUCE-157 modifies JobHistory to log events using Json Format. This can
> be modified to use Avro instead.
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