Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/8803#discussion_r39810864
--- Diff: docs/security.md ---
@@ -23,7 +23,8 @@ If your applications are using event logging, the
directory where the event logs
## Encryption
-Spark supports SSL for Akka and HTTP (for broadcast and file server)
protocols. However SSL is not supported yet for WebUI and block transfer
service.
+Spark supports SSL for Akka and HTTP (for broadcast and file server)
protocols. SASL encryption is
+supported for the block transfer service. Encryption is not yet supported
for the WebUI.
--- End diff --
Should we also explicitly say that encryption is not yet supported for
shuffle data at rest (e.g. in spill files, shuffle files, data cached in memory
or on-disk, etc)?
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