dongjoon-hyun commented on code in PR #38985:
URL: https://github.com/apache/spark/pull/38985#discussion_r1043866184
##########
resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/KubernetesConf.scala:
##########
@@ -275,7 +275,7 @@ private[spark] object KubernetesConf {
.toLowerCase(Locale.ROOT)
.replaceAll("[^a-z0-9\\-]", "-")
.replaceAll("-+", "-"),
- "",
+ "-", // avoid using empty string, see
https://issues.apache.org/jira/browse/LANG-1463
Review Comment:
It's a little confusing that LANG-1463 is marked as fixed at 3.10 and Apache
Spark is using 3.12.
If LANG-1463 is not fixed yet, please mention correctly instead of saying
`see ...`.
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