diff options
Diffstat (limited to 'synapse/replication/tcp')
| -rw-r--r-- | synapse/replication/tcp/handler.py | 9 | ||||
| -rw-r--r-- | synapse/replication/tcp/resource.py | 9 |
2 files changed, 16 insertions, 2 deletions
diff --git a/synapse/replication/tcp/handler.py b/synapse/replication/tcp/handler.py index 615f1828dd..9aba1cd451 100644 --- a/synapse/replication/tcp/handler.py +++ b/synapse/replication/tcp/handler.py @@ -537,7 +537,7 @@ class ReplicationCommandHandler: # Ignore POSITION that are just our own echoes return - logger.info("Handling '%s %s'", cmd.NAME, cmd.to_line()) + logger.debug("Handling '%s %s'", cmd.NAME, cmd.to_line()) self._add_command_to_stream_queue(conn, cmd) @@ -567,6 +567,11 @@ class ReplicationCommandHandler: # between then and now. missing_updates = cmd.prev_token != current_token while missing_updates: + # Note: There may very well not be any new updates, but we check to + # make sure. This can particularly happen for the event stream where + # event persisters continuously send `POSITION`. See `resource.py` + # for why this can happen. + logger.info( "Fetching replication rows for '%s' between %i and %i", stream_name, @@ -590,7 +595,7 @@ class ReplicationCommandHandler: [stream.parse_row(row) for row in rows], ) - logger.info("Caught up with stream '%s' to %i", stream_name, cmd.new_token) + logger.info("Caught up with stream '%s' to %i", stream_name, cmd.new_token) # We've now caught up to position sent to us, notify handler. await self._replication_data_handler.on_position( diff --git a/synapse/replication/tcp/resource.py b/synapse/replication/tcp/resource.py index c6870df8f9..99f09669f0 100644 --- a/synapse/replication/tcp/resource.py +++ b/synapse/replication/tcp/resource.py @@ -204,6 +204,15 @@ class ReplicationStreamer: # turns out that e.g. account data streams share # their "current token" with each other, meaning # that it is *not* safe to send a POSITION. + + # Note: `last_token` may not *actually* be the + # last token we sent out in a RDATA or POSITION. + # This can happen if we sent out an RDATA for + # position X when our current token was say X+1. + # Other workers will see RDATA for X and then a + # POSITION with last token of X+1, which will + # cause them to check if there were any missing + # updates between X and X+1. logger.info( "Sending position: %s -> %s", stream.NAME, |