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Posted to dev@lucene.apache.org by "Ishan Chattopadhyaya (JIRA)" <ji...@apache.org> on 2018/01/27 22:36:00 UTC

[jira] [Created] (SOLR-11920) Differential file copy for IndexFetcher

Ishan Chattopadhyaya created SOLR-11920:
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             Summary: 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


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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