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https://issues.apache.org/jira/browse/SOLR-13695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907432#comment-16907432
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Ishan Chattopadhyaya commented on SOLR-13695:
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Happened on 7.7.1. I don't have the logs now, but I can try to reproduce on
master or 8.2 and attach logs.
> SPLITSHARD (link), followed by DELETESHARD of parent shard causes data loss
> ---------------------------------------------------------------------------
>
> Key: SOLR-13695
> URL: https://issues.apache.org/jira/browse/SOLR-13695
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Ishan Chattopadhyaya
> Assignee: Ishan Chattopadhyaya
> Priority: Critical
>
> One of my clients experienced data loss with the following sequence of
> operations:
> 1) SPLITSHARD with method as "link".
> 2) DELETESHARD of the parent (inactive) shard.
> 3) Query for documents in the subshards, seems like both subshards have 0
> documents.
> Proposing a fix (after offline discussion with [~noble.paul]) based on
> running FORCEMERGE after SPLITSHARD (such that segments are rewritten), and
> not letting DELETESHARD delete the data directory until the FORCEMERGE
> operations finish.
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