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Cao Manh Dat commented on SOLR-13396: ------------------------------------- I'm taking a look. > SolrCloud will delete the core data for any core that is not referenced in > the clusterstate > ------------------------------------------------------------------------------------------- > > Key: SOLR-13396 > URL: https://issues.apache.org/jira/browse/SOLR-13396 > Project: Solr > Issue Type: Bug > Security Level: Public(Default Security Level. Issues are Public) > Components: SolrCloud > Affects Versions: 7.3.1, 8.0 > Reporter: Shawn Heisey > Priority: Major > > SOLR-12066 is an improvement designed to delete core data for replicas that > were deleted while the node was down -- better cleanup. > In practice, that change causes SolrCloud to delete all core data for cores > that are not referenced in the ZK clusterstate. If all the ZK data gets > deleted or the Solr instance is pointed at a ZK ensemble with no data, it > will proceed to delete all of the cores in the solr home, with no possibility > of recovery. > I do not think that Solr should ever delete core data unless an explicit > DELETE action has been made and the node is operational at the time of the > request. If a core exists during startup that cannot be found in the ZK > clusterstate, it should be ignored (not started) and a helpful message should > be logged. I think that message should probably be at WARN so that it shows > up in the admin UI logging tab with default settings. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org