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https://issues.apache.org/jira/browse/SOLR-12012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16381685#comment-16381685
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Cao Manh Dat commented on SOLR-12012:
-------------------------------------
Patch for this ticket based on SOLR-12011 changes. This patch does not handle
rolling updates case and the efforts to do that is a lot. I think it is much
better to postpone this issue until 8.0 where we stop support rolling updates.
> Replicas should skip doing recovery on startup if possible
> ----------------------------------------------------------
>
> Key: SOLR-12012
> URL: https://issues.apache.org/jira/browse/SOLR-12012
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: Cao Manh Dat
> Assignee: Cao Manh Dat
> Priority: Major
> Attachments: SOLR-12012.patch
>
>
> Right now a replica when first loaded always does recovery (except the
> replica is the leader). This will lead to several problems, for example:
> - leaderless if at the same time the replica is doing recovery, the current
> leader goes down.
> - the recovery process is not necessary if the replica is already in-sync
> with the leader
> By using term value introduced in SOLR-11702 we can skip the recovery process
> if replica's term equals to leader's term.
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