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https://issues.apache.org/jira/browse/AURORA-1722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15343046#comment-15343046
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Maxim Khutornenko commented on AURORA-1722:
-------------------------------------------

The {{limit}} would specify the number of scheduled tasks returned. Every task 
will have all task events associated with it. In practice, there are just a few 
events issued per task lifetime, so this overhead should not be causing any 
data transfer issues as long as {{getTasksWithoutConfigs}} is used.

> Add new field to TaskQuery to allow querying latest statuses grouped by 
> instance id
> -----------------------------------------------------------------------------------
>
>                 Key: AURORA-1722
>                 URL: https://issues.apache.org/jira/browse/AURORA-1722
>             Project: Aurora
>          Issue Type: Task
>          Components: Scheduler
>    Affects Versions: 0.16.0
>            Reporter: Igor Morozov
>
> Currently in order to get the status of all job instances both failed and 
> running one needs to issue a query for all task statuses, then group them by 
> instance id and sort by timestamp to get the lastest statuses per instance. 
> For tasks with a lot of churn that may cause unnecessary transferring huge 
> blobs of thrifts. 
> The proposal is to include new member into TaskQuery struct
> struct TaskQuery {
> ...
>   14: i32 limit_per_instance
> }



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