Shalin Shekhar Mangar created SOLR-6554:
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Summary: The overseer node should watch all collections all the
time
Key: SOLR-6554
URL: https://issues.apache.org/jira/browse/SOLR-6554
Project: Solr
Issue Type: Improvement
Components: SolrCloud
Affects Versions: 5.0, Trunk
Reporter: Shalin Shekhar Mangar
Right now (after SOLR-5473 was committed), a node watches a collection only if
stateFormat=1 or if that node hosts at least one core belonging to that
collection.
This means that a node which is the overseer operates on all collections but
watches only a few. So any read goes directly to zookeeper which slows down
overseer operations.
Let's have the overseer node watch all collections always and never remove
those watches (except when the collection itself is deleted).
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