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https://issues.apache.org/jira/browse/SOLR-8372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15058814#comment-15058814
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ASF subversion and git services commented on SOLR-8372:
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Commit 1720251 from [[email protected]] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1720251 ]
SOLR-8372: continue buffering if recovery is canceled/failed
> Canceled recovery can lead to data loss
> ---------------------------------------
>
> Key: SOLR-8372
> URL: https://issues.apache.org/jira/browse/SOLR-8372
> Project: Solr
> Issue Type: Bug
> Reporter: Yonik Seeley
> Attachments: SOLR-8372.patch
>
>
> A recovery via index replication tells the update log to start buffering
> updates. If that recovery is canceled for whatever reason by the replica,
> the RecoveryStrategy calls ulog.dropBufferedUpdates() which stops buffering
> and places the UpdateLog back in active mode. If updates come from the
> leader after this point (and before ReplicationStrategy retries recovery),
> the update will be processed as normal and added to the transaction log. If
> the server is bounced, those last updates to the transaction log look normal
> (no FLAG_GAP) and can be used to determine who is more up to date.
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