RE: disable caches in real time
I suppose you are still losing some performance on the replicated box since it needs to use some resources to warm the cache. It would be nice if a warmed cache could be replicated from the master though perhaps that's not practical. Chris is right though: The newly updated index created by a commit is not seen by users until it has been warmed, at which point it is atomically swapped. -Kallin Nagelberg -Original Message- From: Chris Hostetter [mailto:hossman_luc...@fucit.org] Sent: Wednesday, May 19, 2010 2:38 PM To: solr-user@lucene.apache.org Subject: Re: disable caches in real time : I've always undestand that if you do a commit (replication does it), a new : searcher is open, and you lose performance (queries per second) while the : caches are regenerated. I think i don't explain correctly my situation not if you configure your caches with autowarming -- then solr will warm up the new caches (on the new index) while the old index still serves requests -- this is all manged for you by the SolrCore, no need for core swapping. -Hoss
Re: disable caches in real time
: I've always undestand that if you do a commit (replication does it), a new : searcher is open, and you lose performance (queries per second) while the : caches are regenerated. I think i don't explain correctly my situation not if you configure your caches with autowarming -- then solr will warm up the new caches (on the new index) while the old index still serves requests -- this is all manged for you by the SolrCore, no need for core swapping. -Hoss
Re: disable caches in real time
Hi Chris, Thank you for your answer. I've always undestand that if you do a commit (replication does it), a new searcher is open, and you lose performance (queries per second) while the caches are regenerated. I think i don't explain correctly my situation before, with my schema i want to avoid this loss of performance in an enviroment with frequent updates. Marco Martínez Bautista http://www.paradigmatecnologico.com Avenida de Europa, 26. Ática 5. 3ª Planta 28224 Pozuelo de Alarcón Tel.: 91 352 59 42 2010/5/18 Chris Hostetter > : I want to know if there is any approach to disable caches in a specific > core > : from a multicore server. > > only via hte config. > > : I have a multicore server where the core0 will be listen to the queries > and > : other core (core1) that will be replicated from a master server. Once the > : replication has been done, i will swap the cores. My point is that i want > to > : disable the caches in the core that is in charge of the replication to > save > : memory in the machine. > > that seems bizarely complicated -- replication can work against a "live" > core, no need to do the swap yourself, the replicationHandler takes care > of this for your transparently (ie: you have one core, replicating from a > master -- the old index will be searched by users, and have caches, and > when the new version of the index is ready, the replication handler will > swap the *index* in that core (but the core itself never changes) ... it > can even autowarm the caches on the new index for you before the swap if > you configure it that way. > > -Hoss > >
Re: disable caches in real time
: I want to know if there is any approach to disable caches in a specific core : from a multicore server. only via hte config. : I have a multicore server where the core0 will be listen to the queries and : other core (core1) that will be replicated from a master server. Once the : replication has been done, i will swap the cores. My point is that i want to : disable the caches in the core that is in charge of the replication to save : memory in the machine. that seems bizarely complicated -- replication can work against a "live" core, no need to do the swap yourself, the replicationHandler takes care of this for your transparently (ie: you have one core, replicating from a master -- the old index will be searched by users, and have caches, and when the new version of the index is ready, the replication handler will swap the *index* in that core (but the core itself never changes) ... it can even autowarm the caches on the new index for you before the swap if you configure it that way. -Hoss
Re: disable caches in real time
Any suggestions? I have thought in have two configurations per server and reload each one with the appropiated config file but i would prefer another solution if its possible. Thanks, Marco Martínez Bautista http://www.paradigmatecnologico.com Avenida de Europa, 26. Ática 5. 3ª Planta 28224 Pozuelo de Alarcón Tel.: 91 352 59 42 2010/5/14 Marco Martinez > Hi, > > I want to know if there is any approach to disable caches in a specific > core from a multicore server. > > My situation is the next: > > I have a multicore server where the core0 will be listen to the queries and > other core (core1) that will be replicated from a master server. Once the > replication has been done, i will swap the cores. My point is that i want to > disable the caches in the core that is in charge of the replication to save > memory in the machine. > > Any suggestions will be appreciated. > > Thanks in advance, > > > Marco Martínez Bautista > http://www.paradigmatecnologico.com > Avenida de Europa, 26. Ática 5. 3ª Planta > 28224 Pozuelo de Alarcón > Tel.: 91 352 59 42 >
