elasticsearch java API：matchAll搜索查询不返回结果？

我有一个弹性搜索运行的内存实例，并做一些探索性编码来学习搜索java API。 我能够将文档提交到索引并使用GET检索它们，但是当我尝试简单的搜索查询时，我没有得到任何结果。

// first, try a get request, to make sure there is something in the index GetResponse results = client.prepareGet(INDEX_NAME, INDEX_TYPE, testID) .execute() .actionGet(); // this assertion succeeds, as we expect it to. assertThat(results.getId()).isEqualTo(testID); // next, try the simplest possible search SearchResponse s1 = client.prepareSearch(INDEX_NAME).setQuery(matchAllQuery()) .execute() .actionGet(); // this assertion fails. why? answer: when we have an in-memory node, we have to // manually call refresh on the indexing, after submitting a document. assertThat(s1.getHits().totalHits()).isGreaterThanOrEqualTo(1); 

经过一些测试，我认为问题在于我如何设置我的Node和相关客户端（在内存中）：

 @BeforeMethod public void setup() { // set up elastic search to run locally. since the transaction // log needs a filesystem, we can't run it as purely in memory, // but we can set the data directories into "target", so that maven will // clean up after the fact: http://bit.ly/OTN7Qf Settings settings = ImmutableSettings.settingsBuilder() .put("node.http.enabled", true) .put("path.logs","target/elasticsearch/logs") .put("path.data","target/elasticsearch/data") .put("gateway.type", "none") .put("index.store.type", "memory") .put("index.number_of_shards", 1) .put("index.number_of_replicas", 1).build(); node = NodeBuilder.nodeBuilder().local(true).settings(settings).node(); client = node.client(); } 

Answer 1

有弹性搜索google小组的人非常友好地帮助我。 将文档提交到内存节点后，我需要刷新索引：

  node.client().admin().indices().prepareRefresh().execute().actionGet(); 

调用refresh修复了问题。