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https://issues.apache.org/jira/browse/OAK-8648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16940697#comment-16940697
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Marcel Reutegger commented on OAK-8648:
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bq. Case 2) doesn't seem to be possible upon startup, which leaves us with 1).
Marcel Reutegger, does this sound right?
Yes, this is correct. On startup, a sweep will only happen when an existing
clusterId is picked up that has never been used by an Oak version 1.8 or newer.
> Log reason why NodeDocumentSweeper.sweep is called
> --------------------------------------------------
>
> Key: OAK-8648
> URL: https://issues.apache.org/jira/browse/OAK-8648
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: documentmk
> Affects Versions: 1.8.9
> Reporter: Vincent Frey
> Assignee: Julian Reschke
> Priority: Minor
> Attachments: OAK-8648.diff
>
>
> It can happen during a cluster node restart, that a
> NodeDocumentSweeper.sweep is triggered.
> Depending on the number of nodes, this can delay the start process for
> several hours.
> In order to understand what caused the sweep, it could be interesting to log
> (INFO level) the reason why it has been triggered.
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