Further parallelizaton of ParallelMultiSearcher
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                 Key: LUCENE-2128
                 URL: https://issues.apache.org/jira/browse/LUCENE-2128
             Project: Lucene - Java
          Issue Type: Improvement
          Components: Search
    Affects Versions: 3.0
            Reporter: Israel Tsadok
            Priority: Minor


When calling {{search(Query, Filter, int)}} on a ParallelMultiSearcher, the 
{{createWeights}} function of MultiSearcher is called, and sequentially calls 
{{docFreqs()}} on every sub-searcher. This can take a significant amount of 
time when there are lots of remote sub-searchers.



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