[jira] [Created] (SOLR-8722) Don't force a full ZkStateReader refresh on every Overseer operation

["Scott Blum (JIRA)" <ji...@apache.org>]

Scott Blum created SOLR-8722:
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             Summary: Don't force a full ZkStateReader refresh on every Overseer operation
                 Key: SOLR-8722
                 URL: https://issues.apache.org/jira/browse/SOLR-8722
             Project: Solr
          Issue Type: Improvement
          Components: SolrCloud
    Affects Versions: 5.4.1
            Reporter: Scott Blum
            Assignee: Mark Miller
         Attachments: SOLR-8696.patch, 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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