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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