Github user sebastienrainville commented on a diff in the pull request:
https://github.com/apache/spark/pull/10924#discussion_r53349625
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/CoarseMesosSchedulerBackend.scala
---
@@ -254,53 +258,65 @@ private[spark] class CoarseMesosSchedulerBackend(
val cpus = getResource(offer.getResourcesList, "cpus").toInt
val id = offer.getId.getValue
if (meetsConstraints) {
- if (taskIdToSlaveId.size < executorLimit &&
- totalCoresAcquired < maxCores &&
- mem >= calculateTotalMemory(sc) &&
- cpus >= 1 &&
- failuresBySlaveId.getOrElse(slaveId, 0) < MAX_SLAVE_FAILURES
&&
- !slaveIdsWithExecutors.contains(slaveId)) {
- // Launch an executor on the slave
- val cpusToUse = math.min(cpus, maxCores - totalCoresAcquired)
- totalCoresAcquired += cpusToUse
- val taskId = newMesosTaskId()
- taskIdToSlaveId.put(taskId, slaveId)
- slaveIdsWithExecutors += slaveId
- coresByTaskId(taskId) = cpusToUse
- // Gather cpu resources from the available resources and use
them in the task.
- val (remainingResources, cpuResourcesToUse) =
- partitionResources(offer.getResourcesList, "cpus", cpusToUse)
- val (_, memResourcesToUse) =
- partitionResources(remainingResources.asJava, "mem",
calculateTotalMemory(sc))
- val taskBuilder = MesosTaskInfo.newBuilder()
-
.setTaskId(TaskID.newBuilder().setValue(taskId.toString).build())
- .setSlaveId(offer.getSlaveId)
- .setCommand(createCommand(offer, cpusToUse +
extraCoresPerSlave, taskId))
- .setName("Task " + taskId)
- .addAllResources(cpuResourcesToUse.asJava)
- .addAllResources(memResourcesToUse.asJava)
-
- sc.conf.getOption("spark.mesos.executor.docker.image").foreach
{ image =>
- MesosSchedulerBackendUtil
- .setupContainerBuilderDockerInfo(image, sc.conf,
taskBuilder.getContainerBuilder())
+ if (totalCoresAcquired < maxCores) {
+ if (taskIdToSlaveId.size < executorLimit &&
+ mem >= calculateTotalMemory(sc) &&
+ cpus >= 1 &&
+ failuresBySlaveId.getOrElse(slaveId, 0) <
MAX_SLAVE_FAILURES &&
+ !slaveIdsWithExecutors.contains(slaveId)) {
+ // Launch an executor on the slave
+ val cpusToUse = math.min(cpus, maxCores - totalCoresAcquired)
+ totalCoresAcquired += cpusToUse
+ val taskId = newMesosTaskId()
+ taskIdToSlaveId.put(taskId, slaveId)
+ slaveIdsWithExecutors += slaveId
+ coresByTaskId(taskId) = cpusToUse
+ // Gather cpu resources from the available resources and use
them in the task.
+ val (remainingResources, cpuResourcesToUse) =
+ partitionResources(offer.getResourcesList, "cpus",
cpusToUse)
+ val (_, memResourcesToUse) =
+ partitionResources(remainingResources.asJava, "mem",
calculateTotalMemory(sc))
+ val taskBuilder = MesosTaskInfo.newBuilder()
+
.setTaskId(TaskID.newBuilder().setValue(taskId.toString).build())
+ .setSlaveId(offer.getSlaveId)
+ .setCommand(createCommand(offer, cpusToUse +
extraCoresPerSlave, taskId))
+ .setName("Task " + taskId)
+ .addAllResources(cpuResourcesToUse.asJava)
+ .addAllResources(memResourcesToUse.asJava)
+
+
sc.conf.getOption("spark.mesos.executor.docker.image").foreach { image =>
+
MesosSchedulerBackendUtil.setupContainerBuilderDockerInfo(image, sc.conf,
+ taskBuilder.getContainerBuilder())
+ }
+
+ // Accept the offer and launch the task
+ logDebug(s"Accepting offer: $id with attributes:
$offerAttributes" +
+ s" mem: $mem cpu: $cpus")
+ slaveIdToHost(offer.getSlaveId.getValue) = offer.getHostname
+ d.launchTasks(
+ Collections.singleton(offer.getId),
+ Collections.singleton(taskBuilder.build()), filters)
+ } else {
+ // Decline the offer
+ logDebug(s"Declining offer: $id with attributes:
$offerAttributes" +
+ s" mem: $mem cpu: $cpus")
+ d.declineOffer(offer.getId)
}
-
- // Accept the offer and launch the task
- logDebug(s"Accepting offer: $id with attributes:
$offerAttributes mem: $mem cpu: $cpus")
- slaveIdToHost(offer.getSlaveId.getValue) = offer.getHostname
- d.launchTasks(
- Collections.singleton(offer.getId),
- Collections.singleton(taskBuilder.build()), filters)
} else {
- // Decline the offer
- logDebug(s"Declining offer: $id with attributes:
$offerAttributes mem: $mem cpu: $cpus")
- d.declineOffer(offer.getId)
+ // We reached the maximum number of cores for this framework.
We don't need to see
+ // new offers. Decline the offer for a long period of time.
+ logDebug(s"Declining offer (reached max cores): $id with
attributes:" +
+ s" $offerAttributes mem: $mem cpu: $cpus" +
+ s" for $rejectOfferDurationForReachedMaxCores seconds")
+ d.declineOffer(offer.getId, Filters.newBuilder()
+
.setRefuseSeconds(rejectOfferDurationForReachedMaxCores).build())
--- End diff --
It also depends on `id`, `offerAttributes`, `mem` and `cpus` for logging.
They're all derived from `offer` and some are easier than others to get but we
shouldn't compute them twice just for logging.
Okay I'll change it to handle only the case where offers are rejected for a
longer period.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
