Github user liyinan926 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21748#discussion_r202754518
--- Diff: docs/running-on-kubernetes.md ---
@@ -529,8 +600,11 @@ specific to Spark on Kubernetes.
<td><code>spark.kubernetes.driver.pod.name</code></td>
<td>(none)</td>
<td>
- Name of the driver pod. If not set, the driver pod name is set to
"spark.app.name" suffixed by the current timestamp
- to avoid name conflicts.
+ Name of the driver pod. In cluster mode, if this is not set, the
driver pod name is set to "spark.app.name"
+ suffixed by the current timestamp to avoid name conflicts. In client
mode, if your application is running
+ inside a pod, it is highly recommended to set this to the name of the
pod your driver is running in. Setting this
+ value in client mode allows the driver to inform the cluster that your
application's executor pods should be
--- End diff --
Instead of saying `inform the cluster that your application's executor pods
should be deleted ...`, it's better just say `to allows the driver pod to
become the owner of your application's executor pods for garbage collection to
work`.
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