Github user skonto commented on a diff in the pull request:
https://github.com/apache/spark/pull/11157#discussion_r69456263
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerUtils.scala
---
@@ -356,4 +374,233 @@ private[mesos] trait MesosSchedulerUtils extends
Logging {
sc.conf.getTimeAsSeconds("spark.mesos.rejectOfferDurationForReachedMaxCores",
"120s")
}
+ /**
+ * Checks executor ports if they are within some range of the offered
list of ports ranges,
+ *
+ * @param sc the Spark Context
+ * @param ports the list of ports to check
+ * @return true if ports are within range false otherwise
+ */
+ protected def checkPorts(sc: SparkContext, ports: List[(Long, Long)]):
Boolean = {
+
+ def checkIfInRange(port: Long, ps: List[(Long, Long)]): Boolean = {
+ ps.exists(r => r._1 <= port & r._2 >= port)
+ }
+
+ val portsToCheck = ManagedPorts.getPortValues(sc.conf)
+ val nonZeroPorts = portsToCheck.filter(_ != 0)
+ val withinRange = nonZeroPorts.forall(p => checkIfInRange(p, ports))
+ // make sure we have enough ports to allocate per offer
+ ports.map(r => r._2 - r._1 + 1).sum >= portsToCheck.size && withinRange
+ }
+
+ /**
+ * Partitions port resources.
+ *
+ * @param conf the spark config
+ * @param ports the ports offered
+ * @return resources left, port resources to be used and the list of
assigned ports
+ */
+ def partitionPorts(
+ conf: SparkConf,
+ ports: List[Resource])
+ : (List[Resource], List[Resource], List[Long]) = {
+ val taskPortRanges = getRangeResourceWithRoleInfo(ports.asJava,
"ports")
+ val portsToCheck = ManagedPorts.getPortValues(conf)
--- End diff --
There are too classes of ports. Random chosen and user specified. I try to
reserve what is user specified and then pick random values from what is left.
Actually if you follow the code and the comments:
val nonZeroPorts = portsToCheck.filter(_ != 0) <- determine what ports
we need, zero are implicitly defined from what is left
// reserve non zero ports first
// reserve actual port numbers for zero ports - not set by the user
So its actually (1) (2)
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