[jira] [Created] (UNOMI-691) Control groups dont work well with profile merge

["romain.gauthier (Jira)" <ji...@apache.org>]

romain.gauthier created UNOMI-691:
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             Summary: Control groups dont work well with profile merge
                 Key: UNOMI-691
                 URL: https://issues.apache.org/jira/browse/UNOMI-691
             Project: Apache Unomi
          Issue Type: Bug
            Reporter: romain.gauthier
             Fix For: unomi-1.6.2


h3. Context: 
- The control groups are currently stored as a list, inside a profile or session property, depending on the control group configuration
- On login or any other profile stitching event, properties values are usually merged

h3. Problem: 
Assuming https://issues.apache.org/jira/browse/UNOMI-690 has been fixed 

h4. Given there are 2 profiles
- A, anonymous profile, with control group 123=true, 234=false, 456=missing
- B, identified profile, belonging to control group 123=false, 234=missing, 456=true

h4. Observed behavior
On profile merge, A will either erase all control groups of B 

h4. Expected behavior 
On profile merge, control groups for profile B should switch from: 
123=false, 234=missing, 456=true
to:
123=false, 234=false, 456=true 

In other words, I think that merging of control groups should use some kind of custom "set if missing" strategy for each control group value inside the list.





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