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https://issues.apache.org/jira/browse/SOLR-13396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17440882#comment-17440882
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Yaswanth edited comment on SOLR-13396 at 11/9/21, 3:52 AM:
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Sorry if I am missing something here.. but can I know the status of this case?
Is this still being worked out or is there a workaround ? I did faced similar
issue with solr 8.2 which is quite intermittent and happened twice in
production too.. so pls let me know the status of the same.
was (Author: ykonathala):
Sorry if I am missing something here.. but can I know the status of this case?
Is this still being worked out or is there a workaround ? I did faced similar
issue which is quite intermittent and happened twice in production too.. so pls
let me know the status of the same.
> 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
> 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.
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