Hello Meltwater, long time no speak! Two things when we migrated to ES2 last year (ES6 migration will be done this year), from an Ops perspective: 1. dots in

Hello Meltwater, long time no speak! Two things when we migrated to ES2 last year (ES6 migration will be done this year), from an Ops perspective: 1. dots in field names: https://www.elastic.co/guide/en/elasticsearch/reference/2.4/dots-in-names.html https://www.elastic.co/guide/en/elasticsearch/reference/2.4/.... Took me by surprise even though I ran the migration plugin. This was before Elastic actually rolled back their position and added an allow dots in field names startup param - seriously. 2. Translog flushing behavior changes. If you have replicas set index.translog.durability to async. This results in 80% less IOPS in my case. Great article, great ex-employer.