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https://issues.apache.org/jira/browse/OAK-8593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16938278#comment-16938278
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Amit Jain commented on OAK-8593:
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Thanks [~mreutegg] for your review and updates, I missed the default case for
existing documents.
[~egli] Thanks for you review. Regarding the first point about read-only
instance since, there is no entry into the actual clusterNodes collection/table
it is actually already invisible. This I can change to {{invisible=true}} to
avoid confusion.
Also, this mode is also used when oak-run constructs a read-only instance where
it would not allow any writes.
> Enable a transient cluster-node to connect as invisible to oak discovery
> ------------------------------------------------------------------------
>
> Key: OAK-8593
> URL: https://issues.apache.org/jira/browse/OAK-8593
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: documentmk
> Reporter: Amit Jain
> Assignee: Amit Jain
> Priority: Major
> Attachments: OAK-8593-2.patch, OAK-8593.patch
>
>
> Currently, if Oak is initialized with read-write access to the DocumentStore
> (Mongo/RDB) e.g through oak-run, it is made visible to upper layers (e.g.
> sling discovery) via the oak discovery cluster view. This can cause problems
> in the actual cluster with the differing topology view and the capabilities
> advertised and in some circumstances being made a leader.
> In an offline discussion with [~mreutegg] and [~egli] it was decided that its
> best to expose a flag \{{invisible}} in the cluserNodes collection/table with
> which these instances can connect and then these would be ignored by the oak
> discovery.
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