From c413540fb9e4b6ee2ec975a98676ea56d12249c8 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 10 Jun 2019 16:21:42 +0100 Subject: [PATCH 1/3] Fix bug sending federation transactions with lots of EDUs If we try and send a transaction with lots of EDUs and we run out of space, we call get_new_device_msgs_for_remote with a limit of 0, which then failed. --- synapse/storage/deviceinbox.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/synapse/storage/deviceinbox.py b/synapse/storage/deviceinbox.py index 9b0a99cb490e..4ea0deea4ff8 100644 --- a/synapse/storage/deviceinbox.py +++ b/synapse/storage/deviceinbox.py @@ -138,6 +138,10 @@ def get_new_device_msgs_for_remote( if not has_changed or last_stream_id == current_stream_id: return defer.succeed(([], current_stream_id)) + if limit <= 0: + # This can happen if we run out of room for EDUs in the transaction. + return defer.succeed(([], last_stream_id)) + def get_new_messages_for_remote_destination_txn(txn): sql = ( "SELECT stream_id, messages_json FROM device_federation_outbox" From 1fb6f686165442c12f0c1a723de49884325e1486 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 10 Jun 2019 16:26:36 +0100 Subject: [PATCH 2/3] Newsfile --- changelog.d/5418.bugfix | 1 + 1 file changed, 1 insertion(+) create mode 100644 changelog.d/5418.bugfix diff --git a/changelog.d/5418.bugfix b/changelog.d/5418.bugfix new file mode 100644 index 000000000000..018f0df2a6bd --- /dev/null +++ b/changelog.d/5418.bugfix @@ -0,0 +1 @@ +Fix bug where attemptint to send transactions with large number of EDUs can fail. From 48748c00c416e2fd4fcf7dbc41ce72c02e6fdf6b Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Mon, 10 Jun 2019 16:28:45 +0100 Subject: [PATCH 3/3] Update changelog.d/5418.bugfix Co-Authored-By: Richard van der Hoff <1389908+richvdh@users.noreply.github.com> --- changelog.d/5418.bugfix | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/changelog.d/5418.bugfix b/changelog.d/5418.bugfix index 018f0df2a6bd..3fd4d2a88215 100644 --- a/changelog.d/5418.bugfix +++ b/changelog.d/5418.bugfix @@ -1 +1 @@ -Fix bug where attemptint to send transactions with large number of EDUs can fail. +Fix bug where attempting to send transactions with large number of EDUs can fail.