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https://issues.apache.org/jira/browse/SOLR-14245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Bialecki resolved SOLR-14245.
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I'm closing this issue. Please create a separate Jira to discuss the bug and
the fix - this issue is already 3 releases, and 15 months old.
> Validate Replica / ReplicaInfo on creation
> ------------------------------------------
>
> Key: SOLR-14245
> URL: https://issues.apache.org/jira/browse/SOLR-14245
> Project: Solr
> Issue Type: Improvement
> Components: SolrCloud
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Minor
> Fix For: 8.5
>
>
> Replica / ReplicaInfo should be immutable and their fields should be
> validated on creation.
> Some users reported that very rarely during a failed collection CREATE or
> DELETE, or when the Overseer task queue becomes corrupted, Solr may write to
> ZK incomplete replica infos (eg. node_name = null).
> This problem is difficult to reproduce but we should add safeguards anyway to
> prevent writing such corrupted replica info to ZK.
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