SlowAtomicReader is of course slow, and it's getLiveDocs (based on MultiBits) is slow as it uses a binary search for each lookup. There are various places in Solr that use SolrIndexSearcher.getSlowAtomicReader and then get the liveDocs. Most of these places ought to work with SolrIndexSearcher's getLiveDocs method.
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SOLR-13851 SolrIndexSearcher.getFirstMatch trips assertion if multiple matches
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- Open
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