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https://issues.apache.org/jira/browse/SOLR-8696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Blum updated SOLR-8696:
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Description:
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.
was:
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 over
Overseer operation. This isn't necessary because ZkStateReader keeps itself up
to date.
> 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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