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Convert _insert_graph_receipts_txn to simple_upsert #16299

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Sep 15, 2023
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Convert _insert_graph_receipts_txn to simple_upsert #16299

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908b908
Change isolation level on upsert transcation for receipts_graph to RE…
realtyem Sep 11, 2023
5d3e1eb
changelog
realtyem Sep 11, 2023
07234cb
Allow passing where_clause through a simple_upsert into simple_upsert…
realtyem Sep 12, 2023
4964815
Mutate a runInteraction->simple_upsert_txn into a simple_upsert for _…
realtyem Sep 12, 2023
5d85f66
Update changelog
realtyem Sep 14, 2023
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1 change: 1 addition & 0 deletions changelog.d/16299.misc
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Use a stricter isolation level on `receipts_graph` Postgres transactions to stop error messages.
3 changes: 3 additions & 0 deletions synapse/storage/databases/main/receipts.py
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Expand Up @@ -804,6 +804,9 @@ async def insert_receipt(
event_ids,
thread_id,
data,
# Use READ_COMMITTED to avoid 'could not serialize access due to concurrent
# update' Postgres errors which lead to rollbacks and re-dos.
isolation_level=IsolationLevel.READ_COMMITTED,
)

max_persisted_id = self._receipts_id_gen.get_current_token()
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