[jira] [Created] (AMBARI-6768) Add ability to an agent to cancel queued/running tasks

["Dmytro Sen (JIRA)" <ji...@apache.org>]

Dmytro Sen created AMBARI-6768:
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             Summary: Add ability to an agent to cancel queued/running tasks
                 Key: AMBARI-6768
                 URL: https://issues.apache.org/jira/browse/AMBARI-6768
             Project: Ambari
          Issue Type: Task
          Components: agent
    Affects Versions: 1.7.0
            Reporter: Dmytro Sen
            Assignee: Dmytro Sen
             Fix For: 1.7.0


Agent should accept a list of CANCEL_COMMANDs inside heartbeat response (cancelCommands). CANCEL_COMMAND looks like:
{
  target_task_id: "4-3"
  reason: "Aborted by a user via API"  // Text that has been provided at abort_reason field via API
}
For cancelled tasks (that were in pending or in_progress state), a command report should be generated and sent to a server.
As of now, only cancelling ordinary commands should be supported. 



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