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34 lines
1.5 KiB
MySQL
34 lines
1.5 KiB
MySQL
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/* Copyright 2022 The Matrix.org Foundation C.I.C
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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-- If a Synapse deployment made a large jump in versions (from < 1.62.0 to >= 1.70.0)
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-- in a single upgrade then it might be possible for the event_push_summary_unique_index
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-- to be created in the background from delta 71/02event_push_summary_unique.sql after
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-- delta 73/06thread_notifications_thread_id_idx.sql is executed, causing it to
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-- not drop the event_push_summary_unique_index index.
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--
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-- See https://github.com/matrix-org/synapse/issues/14641
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-- Stop the index from being scheduled for creation in the background.
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DELETE FROM background_updates WHERE update_name = 'event_push_summary_unique_index';
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-- The above background job also replaces another index, so ensure that side-effect
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-- is applied.
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DROP INDEX IF EXISTS event_push_summary_user_rm;
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-- Fix deployments which ran the 73/06thread_notifications_thread_id_idx.sql delta
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-- before the event_push_summary_unique_index background job was run.
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DROP INDEX IF EXISTS event_push_summary_unique_index;
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