cols.add(new Column("n2", "v2"));
Record record = new Record("1", "fam", cols);
_action.replaceRecord(row.getId(), record);
_action.performMutate(getSearcher(reader, directory), writer);
reader = commitAndReopen(reader, writer);
assertEquals(2, reader.numDocs());
IndexSearcher searcher = new IndexSearcher(reader);
TopDocs topDocs = searcher.search(new TermQuery(new Term(BlurConstants.ROW_ID, row.getId())), 10);
Document doc2 = searcher.doc(topDocs.scoreDocs[1].doc);
List<IndexableField> fields = doc2.getFields();