holdenk created SPARK-28905:
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Summary: PVs mounted into Spark may not be writable by Spark
Key: SPARK-28905
URL: https://issues.apache.org/jira/browse/SPARK-28905
Project: Spark
Issue Type: Improvement
Components: Kubernetes
Affects Versions: 3.0.0
Reporter: holdenk
Assignee: holdenk
Right now, for Spark to have write access to the PVs we provide it, they need
to be created with UID 185. This _may_ be a feature, but if we wanted to make
this more flexible we could set a FsGroup in our security context when setting
up the volumes. This would give Spark access provided the PV supports fsgroup
(which on minikube does not appear to be the case -
[https://github.com/kubernetes/minikube/issues/1990] )
If we did want to do this we could add the securitygroup in
MountVolumesFeatureStep but I don't know if we want to do this or if the
current behaviour is desired.
I ran into this while getting the integration tests to work w/minikube 1.3.1 on
OSX. See https://issues.apache.org/jira/browse/SPARK-28904 for details.
cc [~ifilonenko] for thoughts
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