Github user skonto commented on a diff in the pull request:
https://github.com/apache/spark/pull/22405#discussion_r217214888
--- Diff:
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/submit/KubernetesClientApplication.scala
---
@@ -254,3 +251,18 @@ private[spark] class KubernetesClientApplication
extends SparkApplication {
}
}
}
+
+private[spark] object KubernetesClientApplication {
+
+ def getAppName(conf: SparkConf): String =
conf.getOption("spark.app.name").getOrElse("spark")
+
+ def getResourceNamePrefix(appName: String): String = {
+ val launchTime = System.currentTimeMillis()
+ s"$appName-$launchTime"
+ .toLowerCase
+ .replaceAll("\\s+", "-")
+ .replaceAll("\\.", "-")
+ .replaceAll("[^a-z0-9\\-]", "")
+ .replaceAll("-+", "-")
+ }
--- End diff --
reduce dashes. for example:
```
scala> "Spark #$ d #.Pi"
.toLowerCase
.replaceAll("\\s+", "-")
.replaceAll("\\.", "-")
.replaceAll("[^a-z0-9\\-]", "")
.replaceAll("-+", "-")
res15: String = spark-d-pi
```
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