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authorRichard van der Hoff <richard@matrix.org>2020-03-31 17:43:19 +0100
committerRichard van der Hoff <richard@matrix.org>2020-03-31 17:43:58 +0100
commit7b608cf4683c0df2dbb55aacd472c407a0f6b1fa (patch)
treefc7754d8ec884268688e706d5fa252161e1ca8c2 /synapse/storage/schema/delta
parentMake do_next_background_update return a bool (diff)
downloadsynapse-7b608cf4683c0df2dbb55aacd472c407a0f6b1fa.tar.xz
Only run one background update at a time
Diffstat (limited to 'synapse/storage/schema/delta')
-rw-r--r--synapse/storage/schema/delta/58/00background_update_ordering.sql19
1 files changed, 19 insertions, 0 deletions
diff --git a/synapse/storage/schema/delta/58/00background_update_ordering.sql b/synapse/storage/schema/delta/58/00background_update_ordering.sql
new file mode 100644
index 0000000000..02dae587cc
--- /dev/null
+++ b/synapse/storage/schema/delta/58/00background_update_ordering.sql
@@ -0,0 +1,19 @@
+/* Copyright 2020 The Matrix.org Foundation C.I.C
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* add an "ordering" column to background_updates, which can be used to sort them
+   to achieve some level of consistency. */
+
+ALTER TABLE background_updates ADD COLUMN ordering INT NOT NULL DEFAULT 0;