[jira] [Created] (SOLR-15577) Avoid {{ClusterState.getCollectionsMap()}} when not necessary

["Andrzej Bialecki (Jira)" <ji...@apache.org>]

Andrzej Bialecki created SOLR-15577:
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             Summary: Avoid {{ClusterState.getCollectionsMap()}} when not necessary
                 Key: SOLR-15577
                 URL: https://issues.apache.org/jira/browse/SOLR-15577
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Andrzej Bialecki
            Assignee: Andrzej Bialecki


I noticed that in a few places (eg. CollectionsHandler LIST_OP, ClusterStatus) when a simple list of available collections is needed the code invokes {{clusterState.getCollectionsMap()}}, which has to retrieve all collections information into memory. This should be replaced with something like {{clusterState.getCollectionStates().keySet()}}.



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