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https://issues.apache.org/jira/browse/SOLR-920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711856#action_12711856
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Otis Gospodnetic commented on SOLR-920:
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Looks good to me. What happens when a core has a copy of schema.xml in its
conf/ dir and that schema.xml is potentially different from the shared one?
> Cache and reuse IndexSchema
> ---------------------------
>
> Key: SOLR-920
> URL: https://issues.apache.org/jira/browse/SOLR-920
> Project: Solr
> Issue Type: Improvement
> Reporter: Noble Paul
> Assignee: Noble Paul
>
> if there are 1000's of cores then the cost of loading unloading schema.xml
> can be prohibitive
> similar to SOLR-919 we can also cache the DOM object of schema.xml if the
> location on disk is same. All the dynamic properties can be replaced lazily
> when they are read.
> We can go one step ahead in this case. Th IndexSchema object is immutable .
> So if there are no core properties then the same IndexSchema object can be
> used across all the cores
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