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https://issues.apache.org/jira/browse/SOLR-10878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16073783#comment-16073783
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Mikhail Khludnev commented on SOLR-10878:
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I'm afraid {{precommit}} fails.
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==lucene-solr/solr/core/src/test/org/apache/solr/cloud/MoveReplicaHDFSTest.java
common-build.xml:1937: Rat problems were found!
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> 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, 6.7
>
>
> 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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