[jira] [Created] (SOLR-9337) Add fetch() Streaming Expression

["Joel Bernstein (JIRA)" <ji...@apache.org>]

Joel Bernstein created SOLR-9337:
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             Summary: Add fetch() Streaming Expression
                 Key: SOLR-9337
                 URL: https://issues.apache.org/jira/browse/SOLR-9337
             Project: Solr
          Issue Type: New Feature
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Joel Bernstein


The fetch() Streaming Expression wraps another expression and fetches additional fields for documents in batches. The fetch() expression will stream out the Tuples after the data has been fetched. Fields can be fetched from any SolrCloud collection. 

Sample syntax:

{code}
daemon(
         fetch(collectionB, 
             topic(checkpoints, collectionA, q="*:*", fl="a,b,c", rows="50"),
             fl="j,m,z",
             on="a=j"))
        

{code}



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