Merge pull request #6289 from EnterpriseDB/dev/pgd/BDR-5756-epas-auto…

…partition-compat

PGD: document compatibility with EPAS automatic partitioning

product_docs/docs/pgd/5.6/scaling.mdx

@@ -184,3 +184,21 @@ to enable autopartitioning on the given table. If autopartitioning is already
 enabled, then no action occurs. Similarly, use
 [`bdr.autopartition_disable()`](/pgd/latest/reference/autopartition#bdrautopartition_disable)
 to disable autopartitioning on the given table.
+
+## Restrictions on EPAS-native automatic partitioning
+
+EPAS-native automatic partitioning is not supported on PGD.
+
+If the PGD extension is active on an EPAS database, DDL commands to configure
+EPAS automatic partitioning (`ALTER TABLE ... SET AUTOMATIC` and `ALTER TABLE ... SET INTERVAL`)
+will be rejected.
+
+Note that while it is possible to enable the PGD extension on an EPAS database
+containing tables configured to use EPAS-native automatic partitioning, it
+will not be possible to join further nodes using this node as a source node.
+
+EPAS-native automatic partitioning can be disabled with one of the following
+commands:
+
+- `ALTER TABLE ... SET MANUAL` (for list partitioned tables)
+- `ALTER TABLE ... SET INTERVAL ()` (for interval partitioned tables)