viirya commented on a change in pull request #32564:
URL: https://github.com/apache/spark/pull/32564#discussion_r633259528
##########
File path:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/Config.scala
##########
@@ -70,6 +70,15 @@ private[spark] object Config extends Logging {
.booleanConf
.createWithDefault(false)
+ val KUBERNETES_DRIVER_REUSE_PVC =
+ ConfigBuilder("spark.kubernetes.driver.reusePersistentVolumeClaim")
+ .doc("If true, driver pod tries to reuse driver-owned on-demand
persistent volume claims " +
+ "of the deleted executor pods. This can be useful to reduce executor
pod creation delay. " +
+ s"This requires ${KUBERNETES_DRIVER_OWN_PVC.key}=true.")
Review comment:
At least I think it is better to let the users know, the PVC of removed
executor might not be reuse for all cases (e.g., shown in the PR description).
Otherwise, it might be confusing, e.g. "why I set the reuse config, but the PVC
is not reused...", etc..
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