markFinished(state: TaskState, time: Long = System.currentTimeMillis): Unit
TaskInfo
TaskInfo
is information about a running task attempt inside a TaskSet.
TaskInfo
is created when:
-
TaskSetManager
dequeues a task for execution (given resource offer) (and records the task as running) -
TaskUIData does
dropInternalAndSQLAccumulables
-
JsonProtocol
re-creates a task details from JSON
Note
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Back then, at the commit 63051dd2bcc4bf09d413ff7cf89a37967edc33ba, when TaskInfo was first merged to Apache Spark on 07/06/12, TaskInfo was part of spark.scheduler.mesos package — note "Mesos" in the name of the package that shows how much Spark and Mesos influenced each other at that time.
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Name | Description |
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Time when Used when…FIXME |
Creating TaskInfo Instance
TaskInfo
takes the following when created:
-
Index of the task within its TaskSet that may not necessarily be the same as the ID of the RDD partition that the task is computing.
-
Executor that has been offered (as a resource) to run the task
-
Host of the executor
-
TaskLocality, i.e. locality preference of the task
TaskInfo
initializes the internal registries and counters.
Marking Task As Finished (Successfully or Not) — markFinished
Method
markFinished
records the input time
as finishTime.
markFinished
marks TaskInfo
as failed when the input state
is FAILED
or killed for state
being KILLED
.
Note
|
markFinished is used when TaskSetManager is notified that a task has finished successfully or failed.
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