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Posted to dev@lucene.apache.org by "Chirag Gupta (JIRA)" <ji...@apache.org> on 2015/09/05 17:29:45 UTC

[jira] [Created] (SOLR-8012) Field mapping portion of "fl" should be handled in the merger node

Chirag Gupta created SOLR-8012:
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             Summary: Field mapping portion of "fl" should be handled in the merger node
                 Key: SOLR-8012
                 URL: https://issues.apache.org/jira/browse/SOLR-8012
             Project: Solr
          Issue Type: Improvement
          Components: search, SearchComponents - other, SolrCloud
    Affects Versions: 5.1
            Reporter: Chirag Gupta


Today "fl" is used for 
a) filtering the fields and 
b) mapping the field names to alternate names.

we should optimize the network traffic by not passing the field mappings to all the nodes and run on the node which is fanning-out and merging the request.

This impacts the network in the cases where there are 100s of shards to send and the field mapping list is huge



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