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https://issues.apache.org/jira/browse/SLING-5458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Egli updated SLING-5458:
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Fix Version/s: Discovery Commons 1.0.8
> support discovery-lite's id==null (by managing the id in discovery.oak)
> -----------------------------------------------------------------------
>
> Key: SLING-5458
> URL: https://issues.apache.org/jira/browse/SLING-5458
> Project: Sling
> Issue Type: Improvement
> Components: Extensions
> Affects Versions: Discovery Oak 1.2.0
> Reporter: Stefan Egli
> Assignee: Stefan Egli
> Fix For: Discovery Commons 1.0.8, Discovery Oak 1.2.2
>
>
> OAK-3672 describes the fact that the (cluster) id in tarMk case is not
> persisted and thus doesn't survive server restarts. This breaks the discovery
> API contract since discovery.oak uses this id directly as the
> ClusterView.getId - and that must by definition be stable (across restarts
> that is).
> The solution suggested [on oak-dev
> list|http://oak.markmail.org/thread/r4o3evykrlafeimk] is to have tarMk return
> null for this id (while mongoMk still manages this id).
> This implies that discovery.oak must now handle the fact that the
> discovery-lite id is null. In which case it should readOrDefine a
> {{clusterId}} at {{/var/discovery/oak}}.
> This will auto-support cold standby/failover as well as not harm the
> repo-clone case (as this solution is equivalent to how discovery.impl is
> working).
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