GitHub user NiharS opened a pull request:
https://github.com/apache/spark/pull/23026
[SPARK-25960][k8s] Support subpath mounting with Kubernetes
## What changes were proposed in this pull request?
This PR adds configurations to use subpaths with Spark on k8s. Subpaths
(https://kubernetes.io/docs/concepts/storage/volumes/#using-subpath) allow the
user to specify a path within a volume to use instead of the volume's root.
## How was this patch tested?
Added unit tests. Ran SparkPi on a cluster with event logging pointed at a
subpath-mount and verified the driver host created and used the subpath.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/NiharS/spark k8s_subpath
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23026.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #23026
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commit e820aa6feefedb2d59d346e83385605b0f4fe1b4
Author: Nihar Sheth <niharrsheth@...>
Date: 2018-11-13T21:25:47Z
subpath code and tests
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