Github user witgo commented on a diff in the pull request:
https://github.com/apache/spark/pull/15505#discussion_r95732717
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
---
@@ -245,6 +245,16 @@ class CoarseGrainedSchedulerBackend(scheduler:
TaskSchedulerImpl, val rpcEnv: Rp
private def launchTasks(tasks: Seq[Seq[TaskDescription]]) {
for (task <- tasks.flatten) {
val serializedTask = TaskDescription.encode(task)
+ if (serializedTask.limit > TaskSetManager.TASK_SIZE_TO_WARN_KB *
1024) {
--- End diff --
The size of serializedTask exceeds `maxRpcMessageSize` will cause RPC can
not send it to executor, but the size of serializedTask exceeds
`TaskSetManager.TASK_SIZE_TO_WARN_KB` does not cause the problem.
This code is added to keep consistent with the previous code.
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