[#3786] Add release notes about running set-permissions again after u…

…pgrading.

CHANGELOG.rst

@@ -7,6 +7,32 @@
 Changelog
 ---------
 
+v.X.X (TBA)
+===========
+
+Note: Those upgrading to this version of CKAN who run the DataStore need to
+   re-run the 'datastore set-permissions' command. For a package install run it
+   like this:
+
+      sudo ckan datastore set-permissions | sudo -u postgres psql --set ON_ERROR_STOP=1
+
+   Or for a source install:
+
+      . /usr/lib/ckan/default/bin/activate
+      paster --plugin=ckan datastore set-permissions -c /etc/ckan/default/development.ini
+
+   Developers who run the tests should also do:
+
+      paster datastore set-permissions -c test-core.ini | sudo -u postgres psql
+
+   Failure to run 'datastore set-permissions' will find that new and updated
+   datasets will not be searchable in DataStore and the logs will contain this
+   error:
+
+      ProgrammingError: (psycopg2.ProgrammingError) function populate_full_text_trigger() does not exist
+      [SQL: 'CREATE TRIGGER zfulltext\n        BEFORE INSERT OR UPDATE ON "78bf9251-cc2a-4fcf-b761-c2e08b074f18"\n        FOR EACH ROW EXECUTE PROCEDURE populate_full_text_trigger()']
+
+
 v2.7.0 2017-08-02
 =================