Right, the whole optimize thing is in a bit of a state of flux. For indexes that change quite regularly, it's something of a trap as making one big segment gets in the way of the merging algorithm. It'll still work, but it's not all that useful.
For static indexes there's anecdotal evidence that it is useful, in fact I know one of the devs is trying to quantify it now. Having an optimize button right there on core admin encourages people to press it, who _wouldn't_ want an optimized index? ;) All that said, I'm not sure this is intentional or not, thanks for bringing it up. If you must optimize, you can still do it by entering this URL: http://solr_server:port/solr/core_or_collection_name/update?optimize=true We'll have to do something to reconcile the page in the admin guide though if we leave the optimize button off. Best, Erick On Fri, Dec 18, 2015 at 10:40 AM, Rick Leir <richard.l...@canadiana.ca> wrote: > Hi all, > The Solr Admin new UI in 5.4 lost the Optimise button in core admin. What > did it do, and is the 'Optimize' more automatic? Google is not helping me, > but then perhaps I should go past the first results page! > > It is in the screendump here: > https://cwiki.apache.org/confluence/display/solr/Core+Admin > > no mention of it here: > https://cwiki.apache.org/confluence/display/solr/CoreAdmin+API > > Thanks > Rick
