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Noble Paul commented on SOLR-725: --------------------------------- bq.As is, it does not remove any feature nor forces anyone into using them; thus, it's not breaking anything nor does it make your use-cases more difficult I understand your argument.But, when I put in a feature I may have to try to make it work w/ all possible scenarios (ALIAS/RENAME being one of them). Once this is in , it becomes the responsibility of every component writer to do so. bq.Allowing more ways to alias a core is an easier path (no pun intended) to this than constraining users into having just one. It is better to provide a limited set of features which are consistent than providing all the possible features . That makes life easier for all developers (less, simpler code , less documentation/caveats). It is fine to do so if that is a very important feature and there are usecases to support that. bq.I can even dedicate a URL to replication that is not something my end-users replication is not special. It is a normal request handler so having a dedicated URL is special treatment to one handler. We must not add special privileges unless we have to. > CoreContainer/CoreDescriptor/SolrCore cleansing > ----------------------------------------------- > > Key: SOLR-725 > URL: https://issues.apache.org/jira/browse/SOLR-725 > Project: Solr > Issue Type: Improvement > Affects Versions: 1.3 > Reporter: Henri Biestro > Attachments: solr-725.patch, solr-725.patch, solr-725.patch > > > These 3 classes and the name vs alias handling are somewhat confusing. > The recent SOLR-647 & SOLR-716 have created a bit of a flux. > This issue attemps to clarify the model and the list of operations. > h3. CoreDescriptor: describes the parameters of a SolrCore > h4. Definitions > * has one name > ** The CoreDescriptor name may represent multiple aliases; in that > case, first alias is the SolrCore name > * has one instance directory location > * has one config & schema name > h4. Operations > The class is only a parameter passing facility > h3. SolrCore: manages a Lucene index > h4. Definitions > * has one unique *name* (in the CoreContainer) > ** the *name* is used in JMX to identify the core > * has one current set of *aliases* > ** the name is the first alias > h4. Name & alias operations > * *get name/aliases*: obvious > * *alias*: adds an alias to this SolrCore > * *unalias*: removes an alias from this SolrCore > * *name*: sets the SolrCore name > ** potentially impacts JMX registration > * *rename*: picks a new name from the SolrCore aliases > ** triggered when alias name is already in use > h3. CoreContainer: manages all relations between cores & descriptors > h4. Definitions > * has a set of aliases (each of them pointing to one core) > ** ensure alias uniqueness. > h4. SolrCore instance operations > * *load*: makes a SolrCore available for requests > ** creates a SolrCore > ** registers all SolrCore aliases in the aliases set > ** (load = create + register) > * *unload*: removes a core idenitified by one of its aliases > ** stops handling the Lucene index > ** all SolrCore aliases are removed > * *reload*: recreate the core identified by one of its aliases > * *create*: create a core from a CoreDescriptor > ** readies up the Lucene index > * *register*: registers all aliases of a SolrCore > > h4. SolrCore alias operations > * *swap*: swaps 2 aliases > ** method: swap > * *alias*: creates 1 alias for a core, potentially unaliasing a > previously used alias > ** The SolrCore name being an alias, this operation might trigger > a SolrCore rename > * *unalias*: removes 1 alias for a core > ** The SolrCore name being an alias, this operation might trigger > a SolrCore rename > * *rename*: renames a core > h3. CoreAdminHandler: handles CoreContainer operations > * *load*/*create*: CoreContainer load > * *unload*: CoreContainer unload > * *reload*: CoreContainer reload > * *swap*: CoreContainer swap > * *alias*: CoreContainer alias > * *unalias*: CoreContainer unalias > * *rename*: CoreContainer rename > * *persist*: CoreContainer persist, writes the solr.xml > * *stauts*: returns the status of all/one SolrCore -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.