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https://issues.apache.org/jira/browse/SOLR-14151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17196679#comment-17196679
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Noble Paul commented on SOLR-14151:
-----------------------------------
The main problems are
* Core reload is buggy. Most likely there are race conditions
* Schema API reloads the core
Solutions are
* avoid core reload for schema changes
* fix core reload
This feature does not do any core reload. Me and Erick have spent quite some
time trying to debug core reload issues. The chances are that we will never fix
them any way. A least this way we expose those issues
> Make schema components load from packages
> -----------------------------------------
>
> Key: SOLR-14151
> URL: https://issues.apache.org/jira/browse/SOLR-14151
> Project: Solr
> Issue Type: Sub-task
> Reporter: Noble Paul
> Assignee: Noble Paul
> Priority: Major
> Labels: packagemanager
> Fix For: 8.7
>
> Time Spent: 12h 40m
> Remaining Estimate: 0h
>
> Example:
> {code:xml}
> <fieldType name="mytype1" class="pkg1:my.pkg.FieldTypeImpl">
> <analyzer type="index">
> <tokenizer class="pkg2:my.pkg2.MyTokenizerFactory"/>
> <filter class="pkg2:my.pkg3.MyFilterFactory" generateWordParts="1"
> generateNumberParts="0" catenateWords="0"
> catenateNumbers="0" catenateAll="0"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.FlattenGraphFilterFactory"/>
> </analyzer>
> </fieldType>
> {code}
> * When a package is updated, the entire {{IndexSchema}} object is refreshed,
> but the SolrCore object is not reloaded
> * Any component can be prefixed with the package name
> * The semantics of loading plugins remain the same as that of the components
> in {{solrconfig.xml}}
> * Plugins can be registered using schema API
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