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Allow number of executor cores to have fractional values #361

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Jun 29, 2017
Merged

Allow number of executor cores to have fractional values #361

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7 changes: 4 additions & 3 deletions ...ala/org/apache/spark/scheduler/cluster/kubernetes/KubernetesClusterSchedulerBackend.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -107,7 +107,7 @@ private[spark] class KubernetesClusterSchedulerBackend(
MEMORY_OVERHEAD_MIN))
private val executorMemoryWithOverhead = executorMemoryMb + memoryOverheadMb

private val executorCores = conf.getOption("spark.executor.cores").getOrElse("1")
private val executorCores = conf.getDouble("spark.executor.cores", 1d)
private val executorLimitCores = conf.getOption(KUBERNETES_EXECUTOR_LIMIT_CORES.key)

private implicit val requestExecutorContext = ExecutionContext.fromExecutorService(
Expand Down Expand Up @@ -377,7 +377,7 @@ private[spark] class KubernetesClusterSchedulerBackend(
.withAmount(s"${executorMemoryWithOverhead}M")
.build()
val executorCpuQuantity = new QuantityBuilder(false)
.withAmount(executorCores)
.withAmount(executorCores.toString)
.build()
val executorExtraClasspathEnv = executorExtraClasspath.map { cp =>
new EnvVarBuilder()
Expand All @@ -388,7 +388,8 @@ private[spark] class KubernetesClusterSchedulerBackend(
val requiredEnv = Seq(
(ENV_EXECUTOR_PORT, executorPort.toString),
(ENV_DRIVER_URL, driverUrl),
(ENV_EXECUTOR_CORES, executorCores),
// Executor backend expects integral value for executor cores, so round it up to an int.
(ENV_EXECUTOR_CORES, math.ceil(executorCores).toInt.toString),
(ENV_EXECUTOR_MEMORY, executorMemoryString),
(ENV_APPLICATION_ID, applicationId()),
(ENV_EXECUTOR_ID, executorId),
Expand Down