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https://issues.apache.org/jira/browse/SOLR-11083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16087036#comment-16087036
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Shalin Shekhar Mangar commented on SOLR-11083:
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The same problem does not apply for non-shared filesystems because for them,
MoveReplica first creates a new replica and then tries to delete the old core.
So even if overseer fails in between, the cluster just ends up with an extra
replica.
> MoveReplica API can lose replicas for shared file systems on overseer restart
> if source node is live
> ----------------------------------------------------------------------------------------------------
>
> Key: SOLR-11083
> URL: https://issues.apache.org/jira/browse/SOLR-11083
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: hdfs, SolrCloud
> Reporter: Shalin Shekhar Mangar
> Fix For: 7.1
>
>
> MoveReplica unloads the old replica and creates a new one for shared file
> systems. But if the overseer restarts between the two operations then the old
> replica is lost. It is upto the user to detect the failure (using request
> status API) and retry.
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