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https://issues.apache.org/jira/browse/MAPREDUCE-6440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14699739#comment-14699739
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zhihai xu commented on MAPREDUCE-6440:
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It looks like app master web service url
http://<am_ip>:<am_port>/ws/v1/mapreduce/jobs/{jobid}/tasks/{taskid}/attempts
also has this issue. Yes, it will be an incompatible change to fix this issue.
it will be better to fix it at 3.0.0.
> Duplicate Key in Json Output for Job details
> --------------------------------------------
>
> Key: MAPREDUCE-6440
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6440
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver
> Reporter: Anushri
> Assignee: Bibin A Chundatt
> Priority: Minor
>
> Duplicate key in Json Output for Job details for the url :
> http://<jhs_ip>:<jhs_port>/ws/v1/history/mapreduce/jobs/job_id/tasks/task_id/attempts
> If the task type is "REDUCE" the json output for this url contains duplicate
> key for "type".
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