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From "angela (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-8267) Limit number of values in 'nestedCugs' hidden property in NestedCugHook
Date Tue, 23 Apr 2019 14:19:00 GMT

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

angela updated OAK-8267:
    Priority: Minor  (was: Major)

> 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: Minor
> 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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