erikerlandson commented on a change in pull request #24879: [SPARK-28042][K8S]
Support using volume mount as local storage
URL: https://github.com/apache/spark/pull/24879#discussion_r305938310
##########
File path:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/features/LocalDirsFeatureStep.scala
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@@ -43,33 +44,52 @@ private[spark] class LocalDirsFeatureStep(
val localDirVolumes = resolvedLocalDirs
.zipWithIndex
.map { case (localDir, index) =>
- new VolumeBuilder()
- .withName(s"spark-local-dir-${index + 1}")
- .withNewEmptyDir()
- .withMedium(if (useLocalDirTmpFs) "Memory" else null)
- .endEmptyDir()
- .build()
+ val name = s"spark-local-dir-${index + 1}"
+ findVolume(pod, name) match {
+ case Some(volume) => volume
+ case None =>
+ new VolumeBuilder()
+ .withName(s"spark-local-dir-${index + 1}")
Review comment:
What is the scope of visibility on volume names "spark-local-dir-1",
"spark-local-dir-2" ...
Can those names collide with volumes created by other running jobs?
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