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https://issues.apache.org/jira/browse/SOLR-11920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16376649#comment-16376649
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Ishan Chattopadhyaya commented on SOLR-11920:
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I just tested this patch on Windows. The TestReplicationHandler was failing for
me intermittently on Windows (without this patch), and the same behaviour
continued after the patch. I couldn't think from the failure logs that this
patch adversely affected anything there. The TestStressRecovery passed without
any issues.
I'm planning to commit this soon. If someone has time to review this, please
let me know. :-)
> Differential file copy for IndexFetcher
> ---------------------------------------
>
> Key: SOLR-11920
> URL: https://issues.apache.org/jira/browse/SOLR-11920
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Ishan Chattopadhyaya
> Assignee: Ishan Chattopadhyaya
> Priority: Major
> Attachments: SOLR-11920.patch, SOLR-11920.patch
>
>
> In the case of fullCopy=true, all files are copied over from the
> leader/master irrespective of whether or not that exact file exists with the
> replica/slave. This is wasteful, esp. in tlog replicas or pull replicas, when
> only a fraction of the total files are different.
> This stems from SOLR-11815.
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