ReleaseNotes: Add warning about problems in upgrade
diff --git a/ReleaseNotes.txt b/ReleaseNotes.txt
index 7a3f90c..88e97e9 100644
--- a/ReleaseNotes.txt
+++ b/ReleaseNotes.txt
@@ -36,11 +36,21 @@
Known issues:
* Upgrade:
+ - Views dependent on MADlib functions being updated will be dropped during
+ the upgrade and restored after finishing upgrade. If upgrade fails for
+ any reason, these views and the original MADlib schema will *not* be
+ restored. Before initiating upgrade, we recommend taking a backup of
+ the MADlib schema and move all views dependent on MADlib to separate
+ schema and perform a backup with:
+ pg_dump -n 'schema_name'
+
- Upgrade is currently not supported for the PostgreSQL platform and will
abort with an error
+
- Upgrade currently does not detect functions defined by the user that
depend upon MADlib functions. Semantic/API changes to these MADlib
functions could lead to undefined results in such user-defined functions
+
- Some important changes for the upgrade from v0.5 to v0.7 are given below
(Upgrade will raise an error and abort if there exist user-defined views
that depend on these changes. User-defined functions are not validated
