Disable statement timeout during room purge (#18017)

This is already done for `purge_history` but seems to have been forgotten for `purge_room`.
element-hq · Dec 19, 2024 · 234d07e · 234d07e
1 parent bd9a107
commit 234d07e
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diff --git a/changelog.d/18017.misc b/changelog.d/18017.misc
@@ -0,0 +1 @@
+Disable DB statement timeout when doing a purge room since it can be quite long.
diff --git a/synapse/storage/databases/main/purge_events.py b/synapse/storage/databases/main/purge_events.py
@@ -376,6 +376,11 @@ def _purge_room_txn(self, txn: LoggingTransaction, room_id: str) -> List[int]:
                 (room_id,),
             )
 
+        if isinstance(self.database_engine, PostgresEngine):
+            # Disable statement timeouts for this transaction; purging rooms can
+            # take a while!
+            txn.execute("SET LOCAL statement_timeout = 0")
+
         # First, fetch all the state groups that should be deleted, before
         # we delete that information.
         txn.execute(
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Disable DB statement timeout when doing a purge room since it can be quite long.