[jira] [Created] (AURORA-1722) Add new field to TaskQuery to allow querying latest statuses grouped by instance id

["Igor Morozov (JIRA)" <ji...@apache.org>]

Igor Morozov created AURORA-1722:
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             Summary: 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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