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https://issues.apache.org/jira/browse/SOLR-17921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Houston Putman resolved SOLR-17921.
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Fix Version/s: 9.10
Assignee: Houston Putman
Resolution: Fixed
> BaseHttpClusterStateProvider should prefetch refreshes of liveNodes
> -------------------------------------------------------------------
>
> Key: SOLR-17921
> URL: https://issues.apache.org/jira/browse/SOLR-17921
> Project: Solr
> Issue Type: New Feature
> Components: SolrJ
> Reporter: Houston Putman
> Assignee: Houston Putman
> Priority: Major
> Labels: pull-request-available
> Fix For: 9.10
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Currently the BaseHttpClusterStateProvider synchronously updates the
> liveNodes when a request comes in and the cached liveNodes has expired. There
> should be an asynchronous re-fetching of this data so that requests are not
> blocked after expiration.
> Also the getLiveNodes() method was made synchronized in SOLR-17607, which is
> very expensive for multiThreaded solrJ applications, as getLiveNodes() is
> called very often. So that needs to be fixed to only block when the liveNodes
> need to be fetched.
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