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https://issues.apache.org/jira/browse/SOLR-13637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16893206#comment-16893206
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Ishan Chattopadhyaya commented on SOLR-13637:
---------------------------------------------
For some reason, using carrot's version of ImmutableMap was causing the Eclipse
project to not work (import not found). Switched to Google's version in the
above commit, and it now works fine.
> Enable loading of plugins from the corecontainer memclassloader
> ---------------------------------------------------------------
>
> Key: SOLR-13637
> URL: https://issues.apache.org/jira/browse/SOLR-13637
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Noble Paul
> Priority: Major
> Attachments: BasicAuthFails.patch
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> When we update jars or add/modify plugins no core reloading should be
> required .Core reloading is a very expensive operation. Optionally, we can
> just make the plugin depend on the corecontainer level classloader.
> {code:xml}
> <queryParser name="mycustomQParser" class="my.path.to.ClassName"
> runtimeLib="global">
>
> </queryParser>
> {code}
> or alternately using the config API
> {code:json}
> curl -X POST -H 'Content-type:application/json' --data-binary '
> {
> "create-queryparser": {
> "name": "mycustomQParser" ,
> "class" : "my.path.to.ClassName",
> "runtimeLib" : "global"
> }
> }' http://localhost:8983/api/c/mycollection/config
> {code}
> The global classloader is the corecontainer level classloader . So whenever
> this is reloaded The component gets reloaded. The only caveat is, this
> component cannot use core specific jars.
> We will deprecate the {{runtimeLib = true/false}} option and the new options
> are
> * {{runtimeLib=core}} : means this uses the runtimeLib of the collection
> * {{runtimeLib= global}} : means this uses the runtimeLib of the
> corecontainer
> example command to update global jar . This will lead to a reload of all
> components marked as {{runtimeLib=global}}
> {code}
> curl -X POST -H 'Content-type:application/json' --data-binary '
> {
> "update-runtimelib": {
> "name": "lib-name" ,
> "url" : "http://host:port/url/of/jar";,
> "sha512":"<the-new-sha512>"
> }
> }' http://localhost:8983/api/cluster
> {code}
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