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https://issues.apache.org/jira/browse/SOLR-11069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erick Erickson resolved SOLR-11069.
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Resolution: Fixed
> CDCR bootstrapping can get into an infinite loop when a core is reloaded
> ------------------------------------------------------------------------
>
> Key: SOLR-11069
> URL: https://issues.apache.org/jira/browse/SOLR-11069
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: CDCR
> Affects Versions: 6.2, 6.3, 6.4, 6.5, 6.6, 7.0
> Reporter: Amrit Sarkar
> Assignee: Erick Erickson
> Fix For: 7.0, 6.7, 6.6.1, master (8.0), 7.1
>
> Attachments: SOLR-11069.patch, SOLR-11069.patch, SOLR-11069.patch
>
>
> {{LASTPROCESSEDVERSION}} (a.b.v. LPV) action for CDCR breaks down due to
> poorly initialised and maintained buffer log for either source or target
> cluster core nodes.
> If buffer is enabled for cores of either source or target cluster, it return
> {{-1}}, *irrespective of number of entries in tlog read by the {{leader}}*
> node of each shard of respective collection of respective cluster. Once
> disabled, it starts telling us the correct LPV for each core.
> Due to the same flawed behavior, Update Log Synchroniser may doesn't work
> properly as expected, i.e. provides incorrect seek to the {{non-leader}}
> nodes to advance at. I am not sure whether this is an intended behavior for
> sync but it surely doesn't feel right.
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