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https://issues.apache.org/jira/browse/SOLR-9836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15729792#comment-15729792
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Mark Miller commented on SOLR-9836:
-----------------------------------
bq. directoryFactory.doneWithDirectory is for the case where you are done with
the directory and it can now be deleted if need be
Should not have said deleted, it was just on my mind due to the ephemeral
directory factories, but you can expect data to survive if you have not
specified options otherwise. It's for one off directories though, or
directories you are moving on from - once their reference counts hit 0, they
can be let out of the cache.
> Add more graceful recovery steps when failing to create SolrCore
> ----------------------------------------------------------------
>
> Key: SOLR-9836
> URL: https://issues.apache.org/jira/browse/SOLR-9836
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: Mike Drob
> Attachments: SOLR-9836.patch
>
>
> I have seen several cases where there is a zero-length segments_n file. We
> haven't identified the root cause of these issues (possibly a poorly timed
> crash during replication?) but if there is another node available then Solr
> should be able to recover from this situation. Currently, we log and give up
> on loading that core, leaving the user to manually intervene.
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