[jira] [Resolved] (SOLR-8173) CLONE - Leader recovery process can select the wrong leader if all replicas for a shard are down and trying to recover as well as lose updates that should have been recovered.

["Varun Thacker (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-8173?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Varun Thacker resolved SOLR-8173.
---------------------------------
    Resolution: Duplicate

> CLONE - Leader recovery process can select the wrong leader if all replicas for a shard are down and trying to recover as well as lose updates that should have been recovered.
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-8173
>                 URL: https://issues.apache.org/jira/browse/SOLR-8173
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>            Reporter: Matteo Grolla
>            Assignee: Mark Miller
>            Priority: Critical
>              Labels: leader, recovery
>         Attachments: solr_8983.log, solr_8984.log
>
>
> I'm doing this test
> collection test is replicated on two solr nodes running on 8983, 8984
> using external zk
> initially both nodes are empty
> 1)turn on solr 8983
> 2)add,commit a doc x con solr 8983
> 3)turn off solr 8983
> 4)turn on solr 8984
> 5)shortly after (leader still not elected) turn on solr 8983
> 6)8984 is elected as leader
> 7)doc x is present on 8983 but not on 8984 (check issuing a query)
> In attachment are the solr.log files of both instances



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