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https://issues.apache.org/jira/browse/SOLR-8696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15153309#comment-15153309
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Scott Blum commented on SOLR-8696:
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[~shalinmangar] Am I crazy or doesn't the call to
{{waitToSeeReplicasInState()}} do what you're talking about? Loop until the
new replica appears in the local cluster state?
I tried to find a way to step through, but I don't actually see an
AddReplicaTest....
> Optimize overseer + startup
> ---------------------------
>
> Key: SOLR-8696
> URL: https://issues.apache.org/jira/browse/SOLR-8696
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Affects Versions: 5.4.1
> Reporter: Scott Blum
> Labels: patch, performance, solrcloud, startup
> Attachments: SOLR-8696.patch
>
>
> ZkController.publishAndWaitForDownStates() occurs before overseer election.
> That means if there is currently no overseer, there is ironically no one to
> actually service the down state changes it's waiting on. This particularly
> affects a single-node cluster such as you might run locally for development.
> Additionally, we're doing an unnecessary ZkStateReader forced refresh on all
> Overseer operations. This isn't necessary because ZkStateReader keeps itself
> up to date.
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