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https://issues.apache.org/jira/browse/SOLR-12612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16584465#comment-16584465
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Anshum Gupta commented on SOLR-12612:
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This sounds like a great idea. I'm sure a lot of users have use-cases where a
cluster/collection level property is desired for plugins/satellite systems.
{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:
{quote}
In my opinion, the major benefit of having a well defined prefix here is
ensuring a situation when a user creates a custom plugin to use internally, and
that uses a property that is at some point used by someone in the community to
add a totally unrelated plugin.
Such a change would require users to constantly monitor and change code when
such a clash happens.
I do also agree that strict enforcing/validation of known properties is useful
to minimize user errors so +1 on the validation too, but that should be in
addition to a pre-defined prefix for custom props.
Also, I'm not super convinced with 'extra' and me and [~tomasflobbe] were
talking offline and came up with a few options:
* external.
* custom.
* plugin.
This is really a subjective thing so wouldn't want this to lead to a random
debate about the right prefix keyword, but anything that highlights what it's
used for should work.
> 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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