Discovery/Status updates/2019-02-11

This is the weekly update for the week starting 2019-02-11

Search

 * Stas and Trey worked on creating a textcat package to deploy
 * Mathew and Gehel collaborated on creating an Icinga check for failed shard allocation
 * Search, SRE, and WMCS created a cloudelastic-root group that refines certain access to the search clusters
 * Erik ran Wikidata entity autocomplete AB test on de, fr, es wikis. The testing proved to be good, and the new wbsearchentities profiles have been deployed
 * Erik worked to create a metastore if it is missing from indexNamespaces.php (installs were failing while running updateSearchIndexConfig.php)
 * David reworked how source_regex timeout is done in Cirrus (to limit the source_regex query from consuming all the cluster resources)
 * David also confirmed that the ApiFeatureUsage still works with ElasticSearch 6.5.4
 * Erik noted that as production search indicies are now split across three clusters per datacenter, mwgrep needs to be able to query multiple ElasticSearch clusters
 * Erik ensured that the mjolnir daemons will work seamlessly with ElasticSearch 5 or 6
 * Trey and David ensured that the Elastic language analysis components, our internal components, and third-party components are all working as expected in ElasticSearch 6

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