Optimize is rarely useful. It can give some performance gains, but is quite an expensive operation. Pre Solr 7.5, optimizing had some behaviors that weren’t obvious, see: https://lucidworks.com/2017/10/13/segment-merging-deleted-documents-optimize-may-bad/
Post 7.5, the behavior has changed. If I were going to offer advice, you have two paths: 1> don’t optimize at all. This is my preference 2> optimize after every update, _assuming_ this means you update only daily at most. Best, Erick > On Jun 25, 2019, at 5:34 AM, Eduardo Costa Lopes > <eduardo-costa.lo...@serpro.gov.br> wrote: > > Hello folks, > > I got some Lucene indexes in my project, mostly of them are created once and > updated, not so frequently, about once a week or monthly. The indexes sizes > are about 20GB and as more inserts are done the indexes grow, so I'd like to > know what the best index optimization strategy or even it is really > necessary, since 99% of the time we do read operations. The documentation is > not clear in some aspects in this subject. If someone could give some tips, > I'll be very grateful. > > Best regrads, > Eduardo Lopes. > > > > > > - > > > "Esta mensagem do SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO), empresa > pública federal regida pelo disposto na Lei Federal nº 5.615, é enviada > exclusivamente a seu destinatário e pode conter informações confidenciais, > protegidas por sigilo profissional. Sua utilização desautorizada é ilegal e > sujeita o infrator às penas da lei. Se você a recebeu indevidamente, queira, > por gentileza, reenviá-la ao emitente, esclarecendo o equívoco." > > "This message from SERVIÇO FEDERAL DE PROCESSAMENTO DE DADOS (SERPRO) -- a > government company established under Brazilian law (5.615/70) -- is directed > exclusively to its addressee and may contain confidential data, protected > under professional secrecy rules. Its unauthorized use is illegal and may > subject the transgressor to the law's penalties. If you're not the addressee, > please send it back, elucidating the failure." --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
