Alex COLLIGNON created OAK-5025:
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             Summary: Speed up ACE node name generation
                 Key: OAK-5025
                 URL: https://issues.apache.org/jira/browse/OAK-5025
             Project: Jackrabbit Oak
          Issue Type: Improvement
          Components: security
    Affects Versions: 1.5.12
            Reporter: Alex COLLIGNON


Currently, 
{{o.a.j.oak.security.authorization.accesscontrol.Util#generateAceName}} is 
traversing all the existing ACE of a certain node in order to generate 
continuous numbering (allow0, allow1, allow2).
While that certainly helps to produce human readable names, it represents quite 
a performance bottleneck when the number of existing ACE starts to grow.

Since the naming is a pure implementation detail, my proposal is to keep the 
continuous numbering for the first hundreds of nodes and then use a random 
number to generate unique names in a faster fashion.



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