seayoun commented on a change in pull request #26938: [SPARK-30297][CORE] Fix
executor lost in net cause app hung upp
URL: https://github.com/apache/spark/pull/26938#discussion_r360625700
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File path: core/src/main/scala/org/apache/spark/HeartbeatReceiver.scala
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@@ -199,6 +200,18 @@ private[spark] class HeartbeatReceiver(sc: SparkContext,
clock: Clock)
if (now - lastSeenMs > executorTimeoutMs) {
logWarning(s"Removing executor $executorId with no recent heartbeats:
" +
s"${now - lastSeenMs} ms exceeds timeout $executorTimeoutMs ms")
+ sc.schedulerBackend match {
+ case backend: CoarseGrainedSchedulerBackend =>
+ backend.synchronized {
+ // Mark executor pending to remove if executor heartbeat expired
+ // to avoid reschedule task on this executor again
+ if (!backend.executorsPendingToRemove.contains(executorId)) {
+ backend.executorsPendingToRemove(executorId) = false
Review comment:
> `sc.killAndReplaceExecutor` already try to mark it as "pending to remove"
this is right, but the task has rescheduled at this executor agait at this
time, the executor must be removed from the ExecutorBackend to avoid.
For example, it will `disableExecutor` in `CoarseGrainedSchedulerBackend` if
the driver lost connection from executor, `disableExecutor` mark the executor
dead, and then to reschedule the task on the lost connection executors.
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