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https://issues.apache.org/jira/browse/SOLR-10878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16073975#comment-16073975
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ASF subversion and git services commented on SOLR-10878:
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Commit a32ba2c9560cb1e6ad79854a382de668145994c4 in lucene-solr's branch
refs/heads/branch_7_0 from [~ab]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=a32ba2c ]
SOLR-10878: MOVEREPLICA command may lose data when replicationFactor==1.
> MOVEREPLICA command may lose data when replicationFactor==1
> -----------------------------------------------------------
>
> Key: SOLR-10878
> URL: https://issues.apache.org/jira/browse/SOLR-10878
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 6.6, 7.0, 6.7
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Fix For: 7.0, master (8.0)
>
>
> Follow-up to SOLR-10704, a similar scenario occurs in {{MoveReplicaCmd}} when
> replication factor is 1 - the only copy of the source replica may be deleted
> while the target replica is still recovering.
> Also, even when replicationFactor > 1 but the only remaining replicas are of
> the PULL type then leader election won't be able to find any replica to
> become a leader for this shard, which will result in effective data loss for
> that shard.
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