diff options
| -rw-r--r-- | changelog.d/13766.bugfix | 1 | ||||
| -rw-r--r-- | synapse/storage/schema/__init__.py | 1 | ||||
| -rw-r--r-- | synapse/storage/schema/main/delta/72/08begin_cache_invalidation_seq_at_2.sql.postgres | 23 |
3 files changed, 25 insertions, 0 deletions
diff --git a/changelog.d/13766.bugfix b/changelog.d/13766.bugfix new file mode 100644 index 0000000000..c708e54f9c --- /dev/null +++ b/changelog.d/13766.bugfix @@ -0,0 +1 @@ +Fix a long-standing bug where the `cache_invalidation_stream_seq` sequence would begin at 1 instead of 2. diff --git a/synapse/storage/schema/__init__.py b/synapse/storage/schema/__init__.py index 256f745dc0..32cda5e3ba 100644 --- a/synapse/storage/schema/__init__.py +++ b/synapse/storage/schema/__init__.py @@ -76,6 +76,7 @@ Changes in SCHEMA_VERSION = 72: - event_edges.(room_id, is_state) are no longer written to. - Tables related to groups are dropped. - Unused column application_services_state.last_txn is dropped + - Cache invalidation stream id sequence now begins at 2 to match code expectation. """ diff --git a/synapse/storage/schema/main/delta/72/08begin_cache_invalidation_seq_at_2.sql.postgres b/synapse/storage/schema/main/delta/72/08begin_cache_invalidation_seq_at_2.sql.postgres new file mode 100644 index 0000000000..69931fe971 --- /dev/null +++ b/synapse/storage/schema/main/delta/72/08begin_cache_invalidation_seq_at_2.sql.postgres @@ -0,0 +1,23 @@ +/* Copyright 2022 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. + */ + + +-- The sequence needs to begin at 2 because a bunch of code assumes that +-- get_next_id_txn will return values >= 2, cf this comment: +-- https://github.com/matrix-org/synapse/blob/b93bd95e8ab64d27ae26841020f62ee61272a5f2/synapse/storage/util/id_generators.py#L344 + +SELECT setval('cache_invalidation_stream_seq', ( + SELECT COALESCE(MAX(last_value), 1) FROM cache_invalidation_stream_seq +)); |