From a139420a3cfda6a4a4ee4750611b31dd71fc33f3 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>
Date: Thu, 10 Oct 2019 11:29:01 +0100
Subject: Fix races in room stats (and other) updates. (#6187)

Hopefully this will fix the occasional failures we were seeing in the room directory.

The problem was that events are not necessarily persisted (and `current_state_delta_stream` updated) in the same order as their stream_id. So for instance current_state_delta 9 might be persisted *before* current_state_delta 8. Then, when the room stats saw stream_id 9, it assumed it had done everything up to 9, and never came back to do stream_id 8.

We can solve this easily by only processing up to the stream_id where we know all events have been persisted.
---
 changelog.d/6187.bugfix | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog.d/6187.bugfix

(limited to 'changelog.d/6187.bugfix')

diff --git a/changelog.d/6187.bugfix b/changelog.d/6187.bugfix
new file mode 100644
index 0000000000..6142c5b98d
--- /dev/null
+++ b/changelog.d/6187.bugfix
@@ -0,0 +1 @@
+Fix occasional missed updates in the room and user directories.
\ No newline at end of file
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