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Posted to dev@lucene.apache.org by "David Smiley (JIRA)" <ji...@apache.org> on 2018/09/19 20:08:00 UTC

[jira] [Created] (LUCENE-8511) MultiFields.getIndexedFields can be optimized to not use getMergedFieldInfos

David Smiley created LUCENE-8511:
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             Summary: MultiFields.getIndexedFields can be optimized to not use getMergedFieldInfos
                 Key: LUCENE-8511
                 URL: https://issues.apache.org/jira/browse/LUCENE-8511
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: David Smiley


MultiFields.getIndexedFields calls getMergedFieldInfos.  But getMergedFieldInfos is kinda heavy, doing all sorts of stuff that getIndexedFields doesn't care about.  It can simply loop the leaf readers and collect the results into a Set.  Java 8 streams should make easy work of this.



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