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https://issues.apache.org/jira/browse/SOLR-14125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17002051#comment-17002051
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Noble Paul commented on SOLR-14125:
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{quote}If I'm understanding the package loader correctly it will take a core
reload to load the new functions.
{quote}
Yes. New components require a core reload. However, changing the implementation
of existing functions do not require a core reload.
However, in the future, I wish to whitelist a certain set of plugins which do
not require core reload even for registering new plugins. It's fairly easy to
register a new {{Expressible}} without reloading the core. I'm not going to
take a look at that now.
The workflow is as follows for a new type of {{Expressible}}
* Create and install a new package which contains your shiny new streaming
expressions
* Invoke a {{create-expressible}} command on the config API. This internally
results in a core reload
The work flow for updating an existing type of Expressible
* Create and install a new package which contains your new version of
{{Expressible}}
* Invoke an update package command. This does not reload the cores
> <expressible> plugins must be hot loadable
> ------------------------------------------
>
> Key: SOLR-14125
> URL: https://issues.apache.org/jira/browse/SOLR-14125
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Noble Paul
> Priority: Major
> Labels: packagemanager
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> Today, the class is loaded at the core load time an a stong reference is
> held. Package loading need it to be lazily loaded
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