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Posted to issues@solr.apache.org by "ASF subversion and git services (Jira)" <ji...@apache.org> on 2024/01/17 23:20:00 UTC
[jira] [Commented] (SOLR-17096) Support for Cluster Singleton plugins in solr.xml
[ https://issues.apache.org/jira/browse/SOLR-17096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17807929#comment-17807929 ]
ASF subversion and git services commented on SOLR-17096:
--------------------------------------------------------
Commit 1de6d081009d835116df89df3cc2c8d66c1efff4 in solr's branch refs/heads/main from pjmcarthur
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=1de6d081009 ]
SOLR-17096: Cluster Singleton plugin support in solr.xml (#2126)
* Generalize to all "cluster plugins", albeit only supporting <clusterSingleton> and <replicaPlacementFactory> at this time.
* Introduced new `solr.cluster.plugin.edit.enabled` boolean setting to disable /cluster/plugin mutability, required for solr.xml's use of those plugins.
Co-authored-by: Paul McArthur <pm...@proton.me>
> Support for Cluster Singleton plugins in solr.xml
> -------------------------------------------------
>
> Key: SOLR-17096
> URL: https://issues.apache.org/jira/browse/SOLR-17096
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Plugin system
> Reporter: Paul McArthur
> Priority: Major
> Time Spent: 6h 10m
> Remaining Estimate: 0h
>
> This issue is related to, and follows on from SOLR-15782.
> It should be possible to install and manage the configuration of a cluster singleton plugin in an immutable deployment of SolrCloud. SOLR-15782 discusses the merits of declaring such plugin configurations in solr.xml, and it's implementation provides scope to declare the Replica Placement plugin there.
>
> While this approach could work generally for plugins with associated factories that are used to create instances of the plugin when required at runtime (like the Replica Placement Plugin), it does not provide a solution for cluster singleton plugins which are only instantiated by having a configuration declared in the ZooKeeper cluster properties, which are managed solely by invocation of the /cluster/plugin edit APIs.
> It is undesirable to invoke the /cluster/plugin edit APIs with an immutable deployment, and instead any modification to the cluster singleton configurations should occur via a new deployment with the changes declared in solr.xml
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