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Add a background task to purge unused chain IDs. (#9542)

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This is a companion change to apply the fix in #9498 /
922788c604 to previously
purged rooms.
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Patrick Cloke 2021-03-09 11:22:25 -05:00 • committed by GitHub
parent e9df3f496b
commit dc51d8ffaf
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4 changed files with 99 additions and 6 deletions
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8
synapse/storage/databases/main/purge_events.py
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@ -331,13 +331,9 @@ class PurgeEventsStore(StateGroupWorkerStore, SQLBaseStore):
txn.executemany(
"""
DELETE FROM event_auth_chain_links WHERE
(origin_chain_id = ? AND origin_sequence_number = ?) OR
(target_chain_id = ? AND target_sequence_number = ?)
origin_chain_id = ? AND origin_sequence_number = ?
""",
(
(chain_id, seq_num, chain_id, seq_num)
for (chain_id, seq_num) in referenced_chain_id_tuples
),
referenced_chain_id_tuples,
)
# Now we delete tables which lack an index on room_id but have one on event_id