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https://issues.apache.org/jira/browse/SOLR-10285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16189159#comment-16189159
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Cao Manh Dat commented on SOLR-10285:
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Hi [~varunthacker], I don't know why we have to wait for the leader message to
be processed ( because this ticket skipped leader message )? Even if we send
leader message and wait for it to be processed, we can easily get false
positive, when the replica is already a leader and the unset leader message is
in the queue.
> Reduce state messages when there are leader only shards
> -------------------------------------------------------
>
> Key: SOLR-10285
> URL: https://issues.apache.org/jira/browse/SOLR-10285
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Varun Thacker
> Assignee: Cao Manh Dat
> Attachments: SOLR-10285.patch, SOLR-10285.patch, SOLR-10285.patch
>
>
> For shards which have 1 replica ( leader ) we know it doesn't need to recover
> from anyone. We should short-circuit the recovery process in this case.
> The motivation for this being that we will generate less state events and be
> able to mark these replicas as active again without it needing to go into
> 'recovering' state.
> We already short circuit when you set {{-Dsolrcloud.skip.autorecovery=true}}
> but that sys prop was meant for tests only. Extending this to make sure the
> code short-circuits when the core knows its the only replica in the shard is
> the motivation of the Jira.
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