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-rw-r--r--changelog.d/7579.bugfix1
-rw-r--r--synapse/replication/tcp/handler.py3
2 files changed, 4 insertions, 0 deletions
diff --git a/changelog.d/7579.bugfix b/changelog.d/7579.bugfix
new file mode 100644
index 0000000000..54542b6026
--- /dev/null
+++ b/changelog.d/7579.bugfix
@@ -0,0 +1 @@
+Fix bug where `ReplicationStreamer` was not always started when replication was enabled. Bug introduced in v1.14.0rc1.
diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py
index 03300e5336..cbcf46f3ae 100644
--- a/synapse/replication/tcp/handler.py
+++ b/synapse/replication/tcp/handler.py
@@ -159,6 +159,9 @@ class ReplicationCommandHandler:
                 hs.config.redis_port,
             )
 
+            # First let's ensure that we have a ReplicationStreamer started.
+            hs.get_replication_streamer()
+
             # We need two connections to redis, one for the subscription stream and
             # one to send commands to (as you can't send further redis commands to a
             # connection after SUBSCRIBE is called).