From 28781b65e7cb8b0d1fc409d0d78253662b49fe06 Mon Sep 17 00:00:00 2001
From: Neil Johnson <neil@matrix.org>
Date: Wed, 26 Sep 2018 16:16:41 +0100
Subject: [PATCH] fix #3854
---
synapse/storage/monthly_active_users.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/synapse/storage/monthly_active_users.py b/synapse/storage/monthly_active_users.py
index 59580949f1..0fe8c8e24c 100644
--- a/synapse/storage/monthly_active_users.py
+++ b/synapse/storage/monthly_active_users.py
@@ -172,6 +172,10 @@ class MonthlyActiveUsersStore(SQLBaseStore):
Deferred[bool]: True if a new entry was created, False if an
existing one was updated.
"""
+ # Am consciously deciding to lock the table on the basis that is ought
+ # never be a big table and alternative approaches (batching multiple
+ # upserts into a single txn) introduced a lot of extra complexity.
+ # See https://github.com/matrix-org/synapse/issues/3854 for more
is_insert = yield self._simple_upsert(
desc="upsert_monthly_active_user",
table="monthly_active_users",
@@ -181,7 +185,6 @@ class MonthlyActiveUsersStore(SQLBaseStore):
values={
"timestamp": int(self._clock.time_msec()),
},
- lock=False,
)
if is_insert:
self.user_last_seen_monthly_active.invalidate((user_id,))
--
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