pan3793 commented on code in PR #7762:
URL: https://github.com/apache/kyuubi/pull/7762#discussion_r4134905371
##########
docs/deployment/migration-guide.md:
##########
@@ -24,6 +24,13 @@
* Since Kyuubi 1.13, the support of Flink engine for Flink 2.0 is deprecated,
and will be removed in the future.
* Since Kyuubi 1.13, `kyuubi.server.redaction.regex` defaults to
`(?i)secret|password|token|access[.]key` instead of being unset, so
`kyuubi.server.conf.retrieveMode=REDACTED` (the default) redacts matching
session-config keys/values out of the box; it also affects the command-line
arguments Kyuubi logs for spawned engine processes. Set it to a different
pattern to override.
+## Upgrading from Kyuubi 1.11.1 or earlier to 1.12.1 or later
+
+* Since Kyuubi 1.12, internal access token encryption uses a random IV instead
of a static zero IV. Starting
+ with Kyuubi 1.12.1, use `kyuubi.internal.security.crypto.compatibilityMode`
to perform a rolling upgrade of
+ servers and engines from Kyuubi 1.11.1 or earlier as described in
Review Comment:
we will have other patch releases in 1.11.x
```suggestion
servers and engines from Kyuubi 1.11.x or earlier as described in
```
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