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https://issues.apache.org/jira/browse/SOLR-11478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cao Manh Dat resolved SOLR-11478.
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Resolution: Fixed
Fix Version/s: master (8.0)
7.2
> Solr should remove itself from live_nodes in zk immediately on shutdown
> -----------------------------------------------------------------------
>
> Key: SOLR-11478
> URL: https://issues.apache.org/jira/browse/SOLR-11478
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: Binoy Dalal
> Assignee: Cao Manh Dat
> Priority: Minor
> Fix For: 7.2, master (8.0)
>
> Attachments: SOLR-11478.patch
>
>
> Solr currently, upon receiving the stop command, removes its entry from the
> zk /live_nodes znode after it has finished processing all inflight requests,
> just before finally shutting down.
> In this case, any applications that depend on a solr node's live_node entry
> to decide whether or not to query it fail once the stop command has been
> executed but solr has not yet fully shut down.
> Something similar occurs during startup of a solr node. The solr node seems
> to add it's entry to the /live_nodes in zk once it is up but before it has
> started accepting requests and once again, this causes dependent applications
> to fail in a similar fashion.
> Hence, removal of the node entry and addition of the same to the zk
> live_nodes immediately upon shutting down and at the very end upon coming up
> respectively will greatly benefit applications that depend the live_nodes
> znode.
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