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https://issues.apache.org/jira/browse/MAPREDUCE-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12758132#action_12758132
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Owen O'Malley commented on MAPREDUCE-1016:
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The use case that I'm considering is that we have an AJAX client that reads the
job history via hftp, parses it and displays it to the user. The only work the
JobTracker needs to do is give out the URL for getting the job history file.
The rest is done in JavaScript on the client's browser. Until we have an Avro
library in JavaScript, it will be easier to do if the job history is in JSON.
> Make the format of the Job History be JSON instead of Avro binary
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-1016
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1016
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Owen O'Malley
> Assignee: Doug Cutting
> Fix For: 0.21.0, 0.22.0
>
>
> I forgot that one of the features that would be nice is to off load the job
> history display from the JobTracker. That will be a lot easier, if the job
> history is stored in JSON. Therefore, I think we should change the storage
> now to prevent incompatibilities later.
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