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Stop using 'device_max_stream_id' (#7882)

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It serves no purpose and updating everytime we write to the device inbox
stream means all such transactions will conflict, causing lots of
transaction failures and retries.
This commit is contained in:
Erik Johnston 2020-07-17 17:03:27 +01:00 committed by GitHub
parent a3ad045286
commit 2d2acc1cf2
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4 changed files with 3 additions and 5 deletions
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1
changelog.d/7882.misc Normal file
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@ -0,0 +1 @@
Stop using `device_max_stream_id` table and just use `device_inbox.stream_id`.

2
synapse/replication/slave/storage/deviceinbox.py
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@ -26,7 +26,7 @@ class SlavedDeviceInboxStore(DeviceInboxWorkerStore, BaseSlavedStore):
def __init__(self, database: Database, db_conn, hs):
super(SlavedDeviceInboxStore, self).__init__(database, db_conn, hs)
self._device_inbox_id_gen = SlavedIdTracker(
db_conn, "device_max_stream_id", "stream_id"
db_conn, "device_inbox", "stream_id"
)
self._device_inbox_stream_cache = StreamChangeCache(
"DeviceInboxStreamChangeCache",

2
synapse/storage/data_stores/main/__init__.py
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@ -128,7 +128,7 @@ class DataStore(
db_conn, "presence_stream", "stream_id"
)
self._device_inbox_id_gen = StreamIdGenerator(
db_conn, "device_max_stream_id", "stream_id"
db_conn, "device_inbox", "stream_id"
)
self._public_room_id_gen = StreamIdGenerator(
db_conn, "public_room_list_stream", "stream_id"

3
synapse/storage/data_stores/main/deviceinbox.py
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@ -424,9 +424,6 @@ class DeviceInboxStore(DeviceInboxWorkerStore, DeviceInboxBackgroundUpdateStore)
def _add_messages_to_local_device_inbox_txn(
self, txn, stream_id, messages_by_user_then_device
):
sql = "UPDATE device_max_stream_id" " SET stream_id = ?" " WHERE stream_id < ?"
txn.execute(sql, (stream_id, stream_id))
local_by_user_then_device = {}
for user_id, messages_by_device in messages_by_user_then_device.items():
messages_json_for_user = {}