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Add index to temp bg update extremity table #5291

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May 30, 2019
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Add index to temp bg update extremity table #5291

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Add index to temp table
erikjohnston May 30, 2019
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erikjohnston May 30, 2019
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1 change: 1 addition & 0 deletions changelog.d/5291.bugfix
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@@ -0,0 +1 @@
Fix bug where we leaked extremities when we soft failed events, leading to performance degradation.
1 change: 1 addition & 0 deletions synapse/storage/schema/delta/54/delete_forward_extremities.sql
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Expand Up @@ -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);