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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 updated SOLR-11069:
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Attachment: SOLR-11069.patch
This one against master.
Fixes precommit and has documentation changes.
All tests pass.
I need to go over the doc changes again, but this is what it's looking like at
this point. The major changes are an admonition about buffering and some
explanation about what it's for.
> LASTPROCESSEDVERSION for CDCR is flawed when buffering is enabled
> -----------------------------------------------------------------
>
> 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: 7.0
> Reporter: Amrit Sarkar
> Assignee: Erick Erickson
> Attachments: 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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