timsaucer commented on code in PR #1720:
URL: 
https://github.com/apache/datafusion-python/pull/1720#discussion_r3979658843


##########
docs/source/user-guide/upgrade-guides.md:
##########
@@ -96,16 +96,6 @@ way `add_physical_optimizer_rule` does and returns nothing — 
the query planner
 lives in `SessionState`, so it belongs to the session rather than to a
 particular handle on it. See {ref}`extension_planners` for the full protocol.
 
-If a library ships codecs *and* a planner, prefer
-`SessionContext.with_extensions(bundle)` over installing each piece by hand. It
-installs every codec before it binds any planner, so a planner cannot end up
-carrying a chain that a later `with_logical_extension_codec` call has grown.
-The library exposes a bundle object implementing
-`__datafusion_session_components__` for its codecs and
-`__datafusion_session_planner__` for its planner — the latter is handed the
-planner installed so far, so several libraries that each ship one nest instead
-of displacing each other. See {ref}`extension_bundles`.
-

Review Comment:
   This is a drive by removal. There is no "upgrading" to this since this is a 
new feature.



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