2015-07-01 22:32:31             api.py, 1649 in             submit: VERBOSE  Pausing due to database lag: Waiting for 10.64.16.15: 6 seconds lagged
2015-07-01 22:32:31        throttle.py,  249 in               wait: INFO     Sleeping for 5.0 seconds, 2015-07-01 22:32:31
2015-07-01 22:32:36        throttle.py,  140 in  checkMultiplicity: VERBOSE  Found 1 wikidata:wikidata processes running, including this one.
2015-07-01 22:32:36             api.py, 1649 in             submit: VERBOSE  Pausing due to database lag: Waiting for 10.64.16.144: 9 seconds lagged
2015-07-01 22:32:36        throttle.py,  249 in               wait: INFO     Sleeping for 5.0 seconds, 2015-07-01 22:32:36
2015-07-01 22:32:42             api.py, 1730 in             submit: VERBOSE  API Error: query=
{'action': [u'wbsetreference'],
 u'assert': [u'user'],
 u'baserevid': [225657903],
 u'bot': [1],
 u'format': [u'json'],
 u'maxlag': ['5'],
 u'snaks': [u'{"P813": [{"datavalue": {"type": "time", "value": {"after": 0, "precision": 11, "time": "+00000002015-07-01T00:00:00Z", "timezone": 0, "calendarmodel": "http://www.wikidata.org/entity/Q1985727", "before": 0}}, "property": "P813", "snaktype": "value"}], "P854": [{"datavalue": {"type": "string", "value": "http://www.mfa.org/collections/object/reading-on-the-rocks-grand-manan-33709"}, "property": "P854", "snaktype": "value"}]}'],
 'statement': [u'Q20635272$AF33EB11-5184-4212-9CE4-88BC1B5823CC'],
 u'token': [u'5345asdfasdf44878+\\']}
2015-07-01 22:32:42             api.py, 1732 in             submit: VERBOSE             response=
{u'servedby': u'mw1122', u'error': {u'info': u'The wiki is currently in read-only mode', u'readonlyreason': u'The database has been automatically locked while the slave database servers catch up to the master', u'code': u'readonly', u'help': u'See https://www.wikidata.org/w/api.php for API usage'}}

  File "C:\pywikibot\coredev\pywikibot\data\api.py", line 1734, in submit
    raise APIError(**result['error'])
pywikibot.data.api.APIError: readonly: The wiki is currently in read-only mode
<class 'pywikibot.data.api.APIError'>
CRITICAL: Closing network session.

[21:51:25] <multichill> In https://phabricator.wikimedia.org/T100123 the last question. You might be able to answer that
[21:51:31] anomie looks
[21:51:35] <multichill> How long should we back off when we hit read-only?
[21:55:18] <anomie> multichill: For the particular situation there, "The database has been automatically locked while the slave database servers catch up to the master", you're basically waiting for maxlag to go back down. When using the actual maxlag parameter, the recommendation is 5 seconds.
[21:56:14] <multichill> So just the normal 5, 10, 20, 40 etc routine

           if code == "readonly":
                   pywikibot.log(
u"Pausing due to database in read-only: " + info)
                   self.site.throttle.lag(self.throttle)
continue