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From "Jason Lowe (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4020) Web services returns incorrect JSON for deep queue tree
Date Fri, 16 Mar 2012 04:39:52 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4020?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jason Lowe updated MAPREDUCE-4020:

    Attachment: testcase.patch

Attached an patch to the capacity scheduler web services tests that demonstrates the problem.
> Web services returns incorrect JSON for deep queue tree
> -------------------------------------------------------
>                 Key: MAPREDUCE-4020
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4020
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, webapps
>    Affects Versions: 0.23.1
>            Reporter: Jason Lowe
>         Attachments: testcase.patch
> When the capacity scheduler is configured for more than two levels of queues, the web
services API returns incorrect JSON for the subQueues field of some parent queues.  The "subQueues"
field for parent queues should always be an array, but sometimes the field appears multiple
times for a queue and as what looks like a CapacityQueueInfo object instead of an array. 
Besides the sometimes-an-array-sometimes-not problem, parsing the result into a JSON object
causes all but the last "subQueues" field to be discarded since they are overwritten by subsequent
fields with the same name.

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