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Merge pull request #5291 from matrix-org/erikj/add_index

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Add index to temp bg update extremity table
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Erik Johnston 2019-05-30 15:28:37 +01:00 committed by GitHub
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changelog.d/5291.bugfix Normal file
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Fix bug where we leaked extremities when we soft failed events, leading to performance degradation.

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synapse/storage/schema/delta/54/delete_forward_extremities.sql
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@ -20,3 +20,4 @@ INSERT INTO background_updates (update_name, progress_json) VALUES
DROP TABLE IF EXISTS _extremities_to_check; -- To make this delta schema file idempotent.
CREATE TABLE _extremities_to_check AS SELECT event_id FROM event_forward_extremities;
CREATE INDEX _extremities_to_check_id ON _extremities_to_check(event_id);