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https://issues.apache.org/jira/browse/SOLR-6238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14058420#comment-14058420
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Varun Thacker commented on SOLR-6238:
-------------------------------------
On branch lucene_solr_4_7 the assert check fails most of the times.
LeaderInitiatedRecoveryThread is not present in that branch.
> Specialized test case for leader recovery scenario
> --------------------------------------------------
>
> Key: SOLR-6238
> URL: https://issues.apache.org/jira/browse/SOLR-6238
> Project: Solr
> Issue Type: Improvement
> Reporter: Varun Thacker
> Priority: Minor
> Fix For: 4.10
>
> Attachments: SOLR-6238.patch
>
>
> A scenario which could happen at least before the addition of
> LeaderInitiatedRecoveryThread I think. Also this can happen only if one is
> using a non cloud aware client ( which might be quite a few users ) given
> that we have only SolrJ
> Events are in chronological order -
> Leader -> Lost Connection with ZK
> Replica -> Became leader
> Leader -> add document is successful. Forwards it to the replica
> Replica -> add document is unsuccessful as it is the leader and the request
> says it is coming from a leader
> So as of now the the Replica(new leader) won't have the doc but the
> leader(old leader) will have the document.
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