Lucene.Net: 4.8 SetNextReader executes repeatedly and returns only one result about lucenenet HOT 1 OPEN

    public override void Copy(int slot, int doc)
    {
        termCopy = new BytesRef(); // Expensive allocation. This method will be called a lot.
        sortedResults.Get(doc, termCopy);
        bvalues[slot] = termCopy;
    }

    public override int CompareBottom(int doc)
    {
        BytesRef termOrd = new BytesRef(); // Expensive allocation. This method will be called a lot.
        int ord = sortedResults.GetOrd(doc);
        sortedResults.LookupOrd(ord, termOrd); // Expensive lookup. The TermOrdValComparer only does lookups in the Copy() method and only when necessary.
        var result = DoCompare(bvalues[bottomSlot], termOrd);

        return result;
    }