[jira] [Created] (SOLR-14256) Remove HashDocSet

["David Smiley (Jira)" <ji...@apache.org>]

David Smiley created SOLR-14256:
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             Summary: Remove HashDocSet
                 Key: SOLR-14256
                 URL: https://issues.apache.org/jira/browse/SOLR-14256
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: search
            Reporter: David Smiley


This particular DocSet is only used in places where we need to convert SortedIntDocSet in particular to a DocSet that is fast for random access.  Once such a conversion happens, it's only used to test some docs for presence and it could be another interface.  DocSet has kind of a large-ish API surface area to implement.  Since we only need to test docs, we could use Bits interface (having only 2 methods) backed by an off-the-shelf primitive long hash set on our classpath.  Perhaps a new method on DocSet: getBits() or DocSetUtil.getBits(DocSet).

In addition to removing complexity unto itself, this improvement is required by SOLR-14185 because it wants to be able to produce a DocIdSetIterator slice directly from the DocSet but HashDocSet can't do that without sorting first.



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