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https://issues.apache.org/jira/browse/SPARK-3542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-3542.
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Resolution: Not A Problem
> If spark.authenticate.secret is set it's transferred in plain text
> ------------------------------------------------------------------
>
> Key: SPARK-3542
> URL: https://issues.apache.org/jira/browse/SPARK-3542
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.1.0
> Reporter: James Livingston
>
> It is already noted in the SecurityManager API docs but when using the Akka
> communication protocol, SSL is not currently supported and credentials can
> (and often are) passed in plaintext.
> Using one of the examples, you can add this and see "password" sent in
> plaintext via the akka.tcp protocol:
> conf.set("spark.authenticate", "true")
> conf.set("spark.authenticate.secret", "password")
> It's obviously known, but worth having a jira to track.
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