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https://issues.apache.org/jira/browse/SPARK-25887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16715195#comment-16715195
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ASF GitHub Bot commented on SPARK-25887:
----------------------------------------
vanzin commented on a change in pull request #22904: [SPARK-25887][K8S]
Configurable K8S context support
URL: https://github.com/apache/spark/pull/22904#discussion_r240308164
##########
File path:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/SparkKubernetesClientFactory.scala
##########
@@ -67,8 +66,16 @@ private[spark] object SparkKubernetesClientFactory {
val dispatcher = new Dispatcher(
ThreadUtils.newDaemonCachedThreadPool("kubernetes-dispatcher"))
- // TODO [SPARK-25887] Create builder in a way that respects configurable
context
- val config = new ConfigBuilder()
+ // Allow for specifying a context used to auto-configure from the users
K8S config file
+ val kubeContext = sparkConf.get(KUBERNETES_CONTEXT).filter(c =>
StringUtils.isNotBlank(c))
+ logInfo(s"Auto-configuring K8S client using " +
+ s"${if (kubeContext.isEmpty) s"context ${kubeContext.get}" else "current
context"}" +
+ s" from users K8S config file")
+
+ // Start from an auto-configured config with the desired context
+ // Fabric 8 uses null to indicate that the users current context should be
used so if no
+ // explicit setting pass null
+ val config = new ConfigBuilder(autoConfigure(kubeContext.getOrElse(null)))
Review comment:
> What does client mode mean to you?
Client mode means that the driver is not started by Spark. It's started
directly by the user.
> Also - how should one interpret this paragraph in the docs?
I have no idea.
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> Allow specifying Kubernetes context to use
> ------------------------------------------
>
> Key: SPARK-25887
> URL: https://issues.apache.org/jira/browse/SPARK-25887
> Project: Spark
> Issue Type: Improvement
> Components: Kubernetes
> Affects Versions: 2.3.0, 2.3.1, 2.3.2, 2.4.0
> Reporter: Rob Vesse
> Priority: Major
>
> In working on SPARK-25809 support was added to the integration testing
> machinery for Spark on K8S to use an arbitrary context from the users K8S
> config file. However this can fail/cause false positives because regardless
> of what the integration test harness does the K8S submission client uses the
> Fabric 8 client library in such a way that it only ever configures itself
> from the current context.
> For users who work with multiple K8S clusters or who have multiple K8S
> "users" for interacting with their cluster being able to support arbitrary
> contexts without forcing the user to first {{kubectl config use-context
> <context>}} is an important improvement.
> This would be a fairly small fix to {{SparkKubernetesClientFactory}} and an
> associated configuration key, likely {{spark.kubernetes.context}} to go along
> with this.
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