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https://issues.apache.org/jira/browse/JCR-2710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897719#action_12897719
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Michael Dürig commented on JCR-2710:
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Committed initial implementation at revision 984740:
There is a new configuration setting for the user manager:
groupMembershipSplitSize. If this parameter is present group memberships are
collected in a node structure below UserConstants#N_MEMBERS instead of the
default multi valued property UserConstants#P_MEMBERS. Its value determines the
maximum number of member properties until additional intermediate nodes are
inserted. Valid values are integers > 4.
> Add support for large number of users in a group
> ------------------------------------------------
>
> Key: JCR-2710
> URL: https://issues.apache.org/jira/browse/JCR-2710
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-core
> Affects Versions: 2.2.0
> Reporter: Michael Dürig
> Assignee: Michael Dürig
>
> In the current implementation there are several factors which limit the
> number of users in a group:
> - group membership is recorded in a multi valued property which does not
> scale well
> - members of groups are collected eagerly which does not scale well
> I propose to add complementary support for recording group membership in a
> node structure to the current solution. That node structure would - similar
> to users and groups - add intermediate nodes when a group reaches a certain
> threshold on the number of its users.
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