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SPARK-1171: when executor is removed, we should minus totalCores instead of just freeCores on that executor #63

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SPARK-1171: when executor is removed, we should minus totalCores instead of just freeCores on that executor #63

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0c0e409
simplify the implementation of CoarseGrainedSchedulerBackend
CodingCat Mar 3, 2014
af470d3
style fix
CodingCat Mar 3, 2014
43c13e9
keep WorkerOffer immutable
CodingCat Mar 4, 2014
19c2bb4
use copy idiom to reconstruct the workerOffers
CodingCat Mar 4, 2014
f6bf93f
code clean
CodingCat Mar 4, 2014
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2 changes: 1 addition & 1 deletion core/src/main/scala/org/apache/spark/scheduler/WorkerOffer.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -21,4 +21,4 @@ package org.apache.spark.scheduler
* Represents free resources available on an executor.
*/
private[spark]
class WorkerOffer(val executorId: String, val host: String, val cores: Int)
case class WorkerOffer(executorId: String, host: String, cores: Int)
8 changes: 6 additions & 2 deletions core/src/main/scala/org/apache/spark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala
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Expand Up @@ -54,6 +54,7 @@ class CoarseGrainedSchedulerBackend(scheduler: TaskSchedulerImpl, actorSystem: A
private val executorAddress = new HashMap[String, Address]
private val executorHost = new HashMap[String, String]
private val freeCores = new HashMap[String, Int]
private val totalCores = new HashMap[String, Int]
private val addressToExecutorId = new HashMap[Address, String]

override def preStart() {
Expand All @@ -76,6 +77,7 @@ class CoarseGrainedSchedulerBackend(scheduler: TaskSchedulerImpl, actorSystem: A
sender ! RegisteredExecutor(sparkProperties)
executorActor(executorId) = sender
executorHost(executorId) = Utils.parseHostPort(hostPort)._1
totalCores(executorId) = cores
freeCores(executorId) = cores
executorAddress(executorId) = sender.path.address
addressToExecutorId(sender.path.address) = executorId
Expand Down Expand Up @@ -147,10 +149,12 @@ class CoarseGrainedSchedulerBackend(scheduler: TaskSchedulerImpl, actorSystem: A
def removeExecutor(executorId: String, reason: String) {
if (executorActor.contains(executorId)) {
logInfo("Executor " + executorId + " disconnected, so removing it")
val numCores = freeCores(executorId)
addressToExecutorId -= executorAddress(executorId)
val numCores = totalCores(executorId)
executorActor -= executorId
executorHost -= executorId
addressToExecutorId -= executorAddress(executorId)
executorAddress -= executorId
totalCores -= executorId
freeCores -= executorId
totalCoreCount.addAndGet(-numCores)
scheduler.executorLost(executorId, SlaveLost(reason))
Expand Down