From 4ffee8c5d1277d8337e10881dee7585bc9ab4a36 Mon Sep 17 00:00:00 2001
From: Ville Brofeldt <33317356+villebro@users.noreply.github.com>
Date: Thu, 5 Mar 2020 21:15:47 +0200
Subject: [PATCH] [UPDATING] Adding notes regarding #8867 (#9246)

---
 UPDATING.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/UPDATING.md b/UPDATING.md
index 34537a5a2..ef9405e1f 100644
--- a/UPDATING.md
+++ b/UPDATING.md
@@ -23,6 +23,8 @@ assists people when migrating to a new version.
 
 ## Next
 
+* [8867](https://github.com/apache/incubator-superset/pull/8867): a change which adds the `tmp_schema_name` column to the `query` table which requires locking the table. Given the `query` table is heavily used performance may be degraded during the migration. Scheduled downtime may be advised.
+
 * [9238](https://github.com/apache/incubator-superset/pull/9238): the config option `TIME_GRAIN_FUNCTIONS` has been renamed to `TIME_GRAIN_EXPRESSIONS` to better reflect the content of the dictionary.
 
 * [9218](https://github.com/apache/incubator-superset/pull/9218): SQLite connections have been disabled by default