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https://issues.apache.org/jira/browse/SOLR-12612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16584448#comment-16584448
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Tomás Fernández Löbbe commented on SOLR-12612:
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I agree Blob Store is a better place to store configuration files, however,
cluster properties is a good place to store properties that Solr components (or
plugins) can listen on and react on changes (similar to collection properties
but cluster-wide)
{quote}We can also require all extra property starts with prefix like: extra_
{quote}
I think I'd prefer some parameter in the request to tell Solr if it should
validate the property or not instead of enforcing some property pattern.
Something like:
{code:java}
/admin/collections?action=CLUSTERPROP&name=myCustomProperty&val=something
{code}
Would fail, but something like
{code:java}
/admin/collections?action=CLUSTERPROP&name=myCustomProperty&val=something&validate=false
{code}
Would succeed. WDYT? It doesn't need to be {{validate=false}}, it could be
something like {{acceptUnkown=true}}, or something else. As for the PR, the
change is pretty straight forward [~yuanyun.cn], but could you add a test too?
> Accept any key in cluster properties
> ------------------------------------
>
> Key: SOLR-12612
> URL: https://issues.apache.org/jira/browse/SOLR-12612
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 7.4, master (8.0)
> Reporter: jefferyyuan
> Priority: Minor
> Fix For: master (8.0)
>
>
> Cluster properties is a good place to store configuration data that's shared
> in the whole cluster: solr and other (authorized) apps can easily read and
> update them.
>
> It would be very useful if we can store extra data in cluster properties
> which would act as a centralized property management system between solr and
> its related apps (like manager or monitor apps).
>
> And the change would be also very simple.
> We can also require all extra property starts with prefix like: extra_
>
> PR: https://github.com/apache/lucene-solr/pull/429
>
>
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