The time when the task has completed successfully (including the time to remotely fetch results, if necessary).
The time when the task started remotely getting the result.
The time when the task started remotely getting the result. Will not be set if the task result was sent immediately when the task finished (as opposed to sending an IndirectTaskResult and later fetching the result from the block manager).
:: DeveloperApi :: Information about a running task attempt inside a TaskSet.