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https://issues.apache.org/jira/browse/LENS-920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15133891#comment-15133891
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Amareshwari Sriramadasu commented on LENS-920:
----------------------------------------------

Fix for consuming and producing json from all API introduces following 
incompatible changes:
# org.apache.lens.api.result.QueryCostTo.type is renamed to 
org.apache.lens.api.result.QueryCostTo.costType
# All the name="type" specification in cube xsd is changed to name="_type". 
This makes measure type, dim_attribute type, expression type and column type 
fields to be specified as "_type"
# REST API for creating fact and dimtable is changed to pass sessionid as query 
param instead of multi-form data
 

> Error marshalling LensAPIResult to json
> ---------------------------------------
>
>                 Key: LENS-920
>                 URL: https://issues.apache.org/jira/browse/LENS-920
>             Project: Apache Lens
>          Issue Type: Bug
>          Components: api, server
>            Reporter: Amruth S
>            Assignee: Amareshwari Sriramadasu
>              Labels: incompatible
>             Fix For: 2.5
>
>         Attachments: LENS-920.6.patch
>
>
> Rest apis should be able to work with both application/xml and 
> application/json  accept headers.
> But some APIs that return LensAPIResult<?> does not work with 
> application/json accept header.
> To reproduce
> 1) Hit the /lensapi/queryapi/queries with one more additional header 
>    Accept - application/json



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