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Posted to dev@lucene.apache.org by "Shalin Shekhar Mangar (JIRA)" <ji...@apache.org> on 2016/06/29 21:09:11 UTC

[jira] [Created] (SOLR-9264) Optimize ZkController.publishAndWaitForDownStates

Shalin Shekhar Mangar created SOLR-9264:
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             Summary: Optimize ZkController.publishAndWaitForDownStates
                 Key: SOLR-9264
                 URL: https://issues.apache.org/jira/browse/SOLR-9264
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
          Components: SolrCloud
            Reporter: Shalin Shekhar Mangar
            Assignee: Shalin Shekhar Mangar
             Fix For: 6.2, master (7.0)


ZkController.publishAndWaitForDownStates keeps looping over all collections in the cluster state to ensure that every replica hosted on the current node has been marked as down. This is wasteful when you have a large number of collections because each access to a non-watched collection gets data from ZK. Instead, we can watch the interesting collections (i.e. which have replicas hosted locally) and wait till we see the required state.



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