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https://issues.apache.org/jira/browse/SPARK-44144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17879761#comment-17879761
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Dongjoon Hyun commented on SPARK-44144:
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For the record, I'm moving this out of Apache Spark 4.0.0 scope.
> Enable `spark.authenticate` by default in K8s environment
> ---------------------------------------------------------
>
> Key: SPARK-44144
> URL: https://issues.apache.org/jira/browse/SPARK-44144
> Project: Spark
> Issue Type: Sub-task
> Components: Kubernetes
> Affects Versions: 4.0.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
> Apache Spark supports spark.authenticate and spark.authenticate.secret since
> 1.0.0.
> This issue proposes to set `spark.authenticate=true` simply in K8s
> environment. There is no other required change because Spark will
> automatically generate an authentication secret unique to each application
> for a little improved isolation and security per applications in K8s
> environment.
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