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https://issues.apache.org/jira/browse/SOLR-8416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15061272#comment-15061272
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Michael Sun commented on SOLR-8416:
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bq. the collection is "usable" from the client – each shard has a leader that
is live and active?
>From client perspective, the collection or cluster is usable if the leader is
>active. However if high load of indexing starts before all replica becomes
>active, I am not sure if there will be too much sync traffic once replica
>starts.
> Solr collection creation API should return after all cores are alive
> ---------------------------------------------------------------------
>
> Key: SOLR-8416
> URL: https://issues.apache.org/jira/browse/SOLR-8416
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Reporter: Michael Sun
> Attachments: SOLR-8416.patch
>
>
> Currently the collection creation API returns once all cores are created. In
> large cluster the cores may not be alive for some period of time after cores
> are created. For any thing requested during that period, Solr appears
> unstable and can return failure. Therefore it's better the collection
> creation API waits for all cores to become alive and returns after that.
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