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[SPARK-32975][K8S] Add config for driver readiness timeout before executors start #32752

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cchriswu wants to merge 6 commits into from
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[SPARK-32975][K8S] Add config for driver readiness timeout before executors start #32752

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1e4ad67
Ensure driver is ready before executors start
cchriswu Jun 2, 2021
66981fe
Move the wait for driver readiness
cchriswu Jun 2, 2021
02cf0f3
Improve comment and code style
cchriswu Jun 3, 2021
9fafec3
Add config for the timeout
Jun 4, 2021
20509d1
Fix lint issue
cchriswu Jun 4, 2021
4dbae0a
Update config version to 3.1.3
cchriswu Jun 4, 2021
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13 changes: 13 additions & 0 deletions ...es/core/src/main/scala/org/apache/spark/scheduler/cluster/k8s/ExecutorPodsAllocator.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ package org.apache.spark.scheduler.cluster.k8s

import java.time.Instant
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.{AtomicInteger, AtomicLong}

import scala.collection.JavaConverters._
Expand Down Expand Up @@ -61,6 +62,8 @@ private[spark] class ExecutorPodsAllocator(
podAllocationDelay * 5,
conf.get(KUBERNETES_ALLOCATION_EXECUTOR_TIMEOUT))

private val driverPodReadinessTimeout = 5
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private val executorIdleTimeout = conf.get(DYN_ALLOCATION_EXECUTOR_IDLE_TIMEOUT) * 1000

private val namespace = conf.get(KUBERNETES_NAMESPACE)
Expand Down Expand Up @@ -345,6 +348,16 @@ private[spark] class ExecutorPodsAllocator(
s"ResourceProfile Id: $resourceProfileId, target: $expected running: $running.")
// Check reusable PVCs for this executor allocation batch
val reusablePVCs = getReusablePVCs(applicationId, pvcsInUse)
// wait until the driver pod is ready to ensure executors can connect to driver svc
if (numExecutorsToAllocate > 0) {
try {
kubernetesClient.pods().inNamespace(namespace).withName(kubernetesDriverPodName.get).
waitUntilReady(driverPodReadinessTimeout, TimeUnit.MINUTES)
} catch {
case e: InterruptedException =>
logWarning(s"Timeout waiting for driver pod ${kubernetesDriverPodName.get} get ready")
}
}
for ( _ <- 0 until numExecutorsToAllocate) {
val newExecutorId = EXECUTOR_ID_COUNTER.incrementAndGet()
val executorConf = KubernetesConf.createExecutorConf(
Expand Down