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Posted to dev@lucene.apache.org by "Scott Blum (JIRA)" <ji...@apache.org> on 2016/02/18 20:38:18 UTC

[jira] [Created] (SOLR-8696) Optimize overseer + startup

Scott Blum created SOLR-8696:
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             Summary: 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


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.



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