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Remove incorrect migration file from state logical DB (#13788)

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* Remove incorrect migration file from `state` logical DB

The table `ex_outlier_stream` is part of the `main` logical DB; it
should not have been created in the `state` logical DB. We remove this
migration now as a tidy-up.

Note: we cannot `DROP TABLE IF EXISTS ex_outlier_stream` in a new
migration, because some (most) instances of Synapse host both of these
logical DBs on the same DB cluster.

* Changelog
This commit is contained in:
David Robertson 2022-09-14 14:16:12 +01:00 committed by GitHub
parent c73774467e
commit 51a77e990b
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2 changed files with 1 additions and 37 deletions
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changelog.d/13788.misc Normal file
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Remove an old, incorrect migration file.

37
synapse/storage/schema/state/delta/30/state_stream.sql
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/* Copyright 2016 OpenMarket Ltd
*
* 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.
*/
/* We used to create a table called current_state_resets, but this is no
* longer used and is removed in delta 54.
*/
/* The outlier events that have aquired a state group typically through
* backfill. This is tracked separately to the events table, as assigning a
* state group change the position of the existing event in the stream
* ordering.
* However since a stream_ordering is assigned in persist_event for the
* (event, state) pair, we can use that stream_ordering to identify when
* the new state was assigned for the event.
*/
/* NB: This table belongs to the `main` logical database; it should not be present
* in `state`.
*/
CREATE TABLE IF NOT EXISTS ex_outlier_stream(
event_stream_ordering BIGINT PRIMARY KEY NOT NULL,
event_id TEXT NOT NULL,
state_group BIGINT NOT NULL
);