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-rw-r--r--synapse/storage/engines/maria.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/synapse/storage/engines/maria.py b/synapse/storage/engines/maria.py
index 7fcb706a60..a279bfaf44 100644
--- a/synapse/storage/engines/maria.py
+++ b/synapse/storage/engines/maria.py
@@ -40,3 +40,8 @@ class MariaEngine(object):
         )
         db_conn.commit()
         prepare_database(db_conn, self)
+
+    def is_deadlock(self, error):
+        if isinstance(error, self.module.InternalError):
+            return error.sqlstate == 40001 and error.errno == 1213
+        return False