Discovery/Status updates/2019-06-24

This is the weekly update for the week starting 2019-06-24

Search

 * We needed a few alerts to happen when / if mjolnir starts misbehaving
 * Mathew created an Icinga plugin to check number of eligible masters
 * Mathew also created a WDQS reboot cookbook
 * The team worked on implementing a match for any-language label (haslabel:*)
 * We were getting errors because MediaWiki-Vagrant: ES_PATH_CONF must be set to the configuration path, thanks Tgr for the fix!
 * There was a PHP error from CirrusSearch/RequestLogger: "Array to string conversion" that David fixed
 * There was an error where ascii folding behaved differently for autocomplete vs. search that David worked on
 * David worked on another PHP warning where: Invalid argument supplied for foreach
 * Gehel and the team did some capacity planning: for Elastic via replaying prod traffic at a higher velocity at our dallas DC, findings to inform our hardware asks and to be documented in wikitech

Wikidata query service

 * Stas added capability to include wildcards into federation whitelist . This allows adding endpoints (such as DBPedia) which require various URL parameters.
 * Stas added ability to use variable as endpoint for MWAPI service
 * Stas added federated query metrics to WDQS
 * Stas finished upgrade of Blazegraph to Sesame 2.8
 * Stas fixed JSON output format breakage due to upgrade above
 * Stas fixed some bad strings in WDQS data that confused Blazegraph

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