[SPARK-27590][CORE] do not consider skipped tasks when scheduling speculative tasks #24485
Conversation
|
Test build #104986 has finished for PR 24485 at commit
|
| // `successfulTaskDurations` may not equal to `tasksSuccessful`. Here we should only count the | ||
| // tasks that are submitted by this `TaskSetManager` and are completed successfully. | ||
| val numSuccessfulTasks = successfulTaskDurations.size() | ||
| if (numSuccessfulTasks >= minFinishedForSpeculation && numSuccessfulTasks > 0) { |
There was a problem hiding this comment.
unrelated to your change, but a potential cleanup here -- why not compute minFinishedForSpeculation in the construction, and even set it to math.max(1, (speculationQuantile * numTasks).floor.toInt)? Then you also don't need the extra numSuccessfulTasks > 0 here.
|
LGTM |
|
Test build #105143 has finished for PR 24485 at commit
|
|
retest this please |
|
Test build #105150 has finished for PR 24485 at commit
|
| @@ -1032,14 +1032,14 @@ private[spark] class TaskSetManager( | |||
| return false | |||
| } | |||
| var foundTasks = false | |||
| val minFinishedForSpeculation = (speculationQuantile * numTasks).floor.toInt | |||
| val minFinishedForSpeculation = math.max((speculationQuantile * numTasks).floor.toInt, 1) | |||
There was a problem hiding this comment.
sorry I had actually meant to just compute this once in the constructor, eg. around line 70
|
Test build #105160 has finished for PR 24485 at commit
|
|
Test build #105186 has finished for PR 24485 at commit
|
|
merged to master. Thanks @cloud-fan ! |
|
@squito thanks for the review and merge! |
What changes were proposed in this pull request?
This is a followup of #24375
When
TaskSetManagerskips a task because its corresponding partition is already completed by otherTaskSetManagers, we should not consider the duration of the task that is finished by otherTaskSetManagers to schedule the speculative tasks of thisTaskSetManager.How was this patch tested?
updated test case