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https://issues.apache.org/jira/browse/SPARK-44144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17759061#comment-17759061
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Thomas Graves commented on SPARK-44144:
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I'm not necessarily against this but it seems odd to do for one resource
manager and not others, especially like YARN where the same is true that it
automatically generates secrets. Its also inconsistent with what we have done
in the past with essentially auth off by default. Does this affect performance
for instance?
> 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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