[jira] [Updated] (OAK-8267) Limit number of values in 'nestedCugs' hidden property in NestedCugHook

["angela (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-8267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

angela updated OAK-8267:
------------------------
    Issue Type: Wish  (was: Bug)

> Limit number of values in 'nestedCugs' hidden property in NestedCugHook
> -----------------------------------------------------------------------
>
>                 Key: OAK-8267
>                 URL: https://issues.apache.org/jira/browse/OAK-8267
>             Project: Jackrabbit Oak
>          Issue Type: Wish
>          Components: authorization-cug
>            Reporter: Tom Blackford
>            Priority: Major
>
> The logic in NestedCugHook.addNestedCugPath maintains a hidden multivalue string property at /:nestedCugs (see [1]). 
> If a customer had many thousands of CUGs, this would result in many thousands of values on this string property which is unlikely to scale.
> From [~anchela]: 
> {quote}
>  the reason for storing it is performance optimization i.e. minimizing reading from nodes to see if they hold a cug if the intended usages is that there are few and most nodes don't have a cug. i wouldn't not want to remove the hidden property for that default use case. but we could for sure take a look to see if we could introduce a threshold similar to the one at the root node i.e. using a counter instead of maintaining the complete list and in addition drop the list altogether in that case....
> {quote}
> [1]
> https://github.com/apache/jackrabbit-oak/blob/073f2b5378cd198a9cb30eb1f57958fb805ce508/oak-authorization-cug/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/cug/impl/NestedCugHook.java#L79



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