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https://issues.apache.org/jira/browse/OAK-12010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18043559#comment-18043559
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Thomas Mueller commented on OAK-12010:
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WIP: https://github.com/apache/jackrabbit-oak/pull/2652
> Simplified index management
> ---------------------------
>
> Key: OAK-12010
> URL: https://issues.apache.org/jira/browse/OAK-12010
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Priority: Major
>
> Currently, Oak indexes are defined using JCR nodes. There are a few known
> issues with the current configuration:
> * Index definitions can be changed while they are being used.
> * For Lucene indexes, there are two versions of the index definition: the one
> visible and in the one used for queries (the so-called "stored" definition).
> Only setting "reindex" or "refresh" to true updates the stored one.
> * There can be multiple sources for index definitions: (a) so-called
> "product" indexes, (b) customizations, and (c) changes via UI or automation.
> All these sources can be changed independently. It would be good to merge the
> changes if one of them changes.
> * Index definitions are JCR nodes, making it hard to change. Using JSON
> config files would simplify changes (one JSON file per index, or even one
> JSON file for multiple indexes).
> * Index definitions are mutable. It would be better if they are effectively
> immutable, by using versions.
> I'm proposing to retain the current index configuration, but to add a way to
> customize indexes via JSON. So that the current configurations are fully
> backward compatible, but we use a new, additional way to configure indexes.
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