I am not sure if this is wikidata or deployment related: https://logstash.wikimedia.org/goto/29bb2ebcf0ccd9e90e4f7773fdc666dd
They are caused by a job, but no deployments or external causes found at the time. They look like this:
{
"_index": "logstash-2017.01.30",
"_type": "mediawiki",
"_id": "AVnvSXzq3-sTQj-LhJL3",
"_score": null,
"_source": {
"message": "DatabaseMysqlBase::lock failed to acquire lock 'wikidatawiki-activeusers'\n",
"@version": 1,
"@timestamp": "2017-01-30T12:11:27.000Z",
"type": "mediawiki",
"host": "mw1166",
"level": "WARNING",
"tags": [
"syslog",
"es",
"es"
],
"channel": "DBQuery",
"normalized_message": "DatabaseMysqlBase::lock failed to acquire lock 'wikidatawiki-activeusers'\n",
"url": "/rpc/RunJobs.php?wiki=wikidatawiki&type=recentChangesUpdate&maxtime=60&maxmem=300M",
"ip": "127.0.0.1",
"http_method": "POST",
"server": "127.0.0.1",
"referrer": null,
"wiki": "wikidatawiki",
"mwversion": "1.29.0-wmf.9",
"reqId": "WI8tbQpAID4AAByFT3UAAABY"
},
"fields": {
"@timestamp": [
1485778287000
]
},
"sort": [
1485778287000
]
}