John created SPARK-21346:
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Summary: Spark does not use SSL for HTTP File Server and Broadcast
Server
Key: SPARK-21346
URL: https://issues.apache.org/jira/browse/SPARK-21346
Project: Spark
Issue Type: Question
Components: Documentation, Spark Core
Affects Versions: 2.1.1
Reporter: John
Priority: Minor
SecurityManager states that SSL is used to secure HTTP communication for the
broadcast and file server. However, the SSLOptions from the SecurityManager
only seem to be used by the SparkUI, the WebUI, and the HistoryServer.
According to [Spark-11140|https://issues.apache.org/jira/browse/SPARK-11140]
and [Spark-12588|https://issues.apache.org/jira/browse/SPARK-12588], neither
the file server nor broadcast use HTTP anymore. It seems that the documentation
is inaccurate and that Spark actually uses SASL on the RPC endpoints to secure
the file server and broadcast communications.
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