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https://issues.apache.org/jira/browse/YARN-6257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16417016#comment-16417016
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Weiwei Yang commented on YARN-6257:
-----------------------------------
Hi [~Tao Yang]
Can you please fix the checkstyle and findbugs issues?
About the message, based on [~sunilg]'s comment, how about
{quote}the health metrics of capacity scheduler. This metrics existed since
2.8.0, but the output was not well formatted. Hence users can not make use of
this field cleanly, this is optimized from 3.2.0 onwards.
{quote}
Basically I don't want to say it was an illegal JSON as it follows JSON spec.
Does that make sense?
> CapacityScheduler REST API produces incorrect JSON - JSON object
> operationsInfo contains deplicate key
> ------------------------------------------------------------------------------------------------------
>
> Key: YARN-6257
> URL: https://issues.apache.org/jira/browse/YARN-6257
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacityscheduler
> Affects Versions: 2.8.1
> Reporter: Tao Yang
> Assignee: Tao Yang
> Priority: Minor
> Attachments: YARN-6257.001.patch, YARN-6257.002.patch,
> YARN-6257.003.patch
>
>
> In response string of CapacityScheduler REST API,
> scheduler/schedulerInfo/health/operationsInfo have duplicate key 'entry' as a
> JSON object :
> {code}
> "operationsInfo":{
>
> "entry":{"key":"last-preemption","value":{"nodeId":"N/A","containerId":"N/A","queue":"N/A"}},
>
> "entry":{"key":"last-reservation","value":{"nodeId":"N/A","containerId":"N/A","queue":"N/A"}},
>
> "entry":{"key":"last-allocation","value":{"nodeId":"N/A","containerId":"N/A","queue":"N/A"}},
>
> "entry":{"key":"last-release","value":{"nodeId":"N/A","containerId":"N/A","queue":"N/A"}}
> }
> {code}
> To solve this problem, I suppose the type of operationsInfo field in
> CapacitySchedulerHealthInfo class should be converted from Map to List.
> After convert to List, The operationsInfo string will be:
> {code}
> "operationInfos":[
>
> {"operation":"last-allocation","nodeId":"N/A","containerId":"N/A","queue":"N/A"},
>
> {"operation":"last-release","nodeId":"N/A","containerId":"N/A","queue":"N/A"},
>
> {"operation":"last-preemption","nodeId":"N/A","containerId":"N/A","queue":"N/A"},
>
> {"operation":"last-reservation","nodeId":"N/A","containerId":"N/A","queue":"N/A"}
> ]
> {code}
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