Stefan Egli created SLING-4371:
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             Summary: Create 'cluster clocks in sync' health check
                 Key: SLING-4371
                 URL: https://issues.apache.org/jira/browse/SLING-4371
             Project: Sling
          Issue Type: Sub-task
          Components: Extensions, Health Check
            Reporter: Stefan Egli


Write a health-check (probably in the discovery.impl bundle itself?) that 
checks the newly added 'votedAt' timestamp of each cluster instance and makes 
sure they don't differ too much. If they do, fail the check. This would be a 
very simple check to make sysadmins aware that the clocks are not in sync - or 
for that matter, that there is a problem in the repository, ie that there are 
too large write-delays between instances hooked to the same repository.



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