Solr更新索引编写器在重新启动之前不会影响搜索

Question

我确实实现了一个Solr插件，用于更新Solr事件（提交，优化等）的一些字段。我的问题是更新的文档不会影响Solr搜索，直到我手动尝试重新启动Solr。请你看看我的代码并告诉我是什么部分导致了这个问题？

问候。

    boolean success = false;
    NamedList response = new SimpleOrderedMap();
    keyword.init(searcher, params);
    BooleanQuery query = new BooleanQuery();
    for (String fieldName : keywordSourceFields) {
      TermQuery termQuery = new TermQuery(new Term(fieldName, "noval"));
      query.add(termQuery, Occur.MUST_NOT);
    }
    TermQuery termQuery = new TermQuery(new Term(keywordField, "noval"));
    query.add(termQuery, Occur.MUST);
    RefCounted<IndexWriter> iw = null;
    IndexWriter writer = null;
    try {
      TopDocs results = searcher.search(query, maxNumDocs);
      ScoreDoc[] hits = results.scoreDocs;
      iw = solrCoreState.getIndexWriter(core);
      writer = iw.get();
      FieldType type = new FieldType(StringField.TYPE_STORED);
      for (int i = 0; i < hits.length; i++) {
        Document document = searcher.doc(hits[i].doc);
        List<String> keywords = keyword.getKeywords(hits[i].doc);
        if (keywords.size() > 0) document.removeFields(keywordField);
        for (String word : keywords) {
          document.add(new Field(keywordField, word, type));
        }
        String uniqueKey = searcher.getSchema().getUniqueKeyField().getName();
        writer.updateDocument(new Term(uniqueKey, document.get(uniqueKey)),
            document);
      }
      response.add("Number of Selected Docs", results.totalHits);
      writer.commit();
    } catch (IOException | SyntaxError e) {
      throw new RuntimeException();
    } finally {
      if (iw != null) {
        iw.decref();
      }
    }