On Sat, Nov 16, 2019 at 6:58 PM Aran via Wikitech-l < wikitech-l@lists.wikimedia.org> wrote:
Hi all, [...] Please if anyone has heard of this kind of things and could point us in the right direction here that would be awesome!
Hi, no, I've never encountered such random scenario. If inspecting the various logs (mediawiki and elasticsearch) did not provide any clues I would suggest adding debug log messages to the DataSender::sendData method (includes/DataSender.php). This is the last method called from mediawiki before reaching elasticsearch. If you find something interesting or something you think is broken please file a task to http://phabricator.wikimedia.org/ under the tag CirrusSearch.
David.