Java Client API data indexed but not available in a search, works in debug mode

[vmassol (Vincent Massol)]

Hi guys,

I'm a bit stuck on a problem I don't understand. I'm basically doing the following, using the Java Client API in ES 7.17:

            RestClient restClient = RestClient.builder("...some url...")
                .setHttpClientConfigCallback(httpClientBuilder -> httpClientBuilder
                    .useSystemProperties()
                .build();
            this.transport = new RestClientTransport(
                restClient, new JacksonJsonpMapper());
            this.client = new ElasticsearchClient(this.transport);
...
            client.index(builder -> builder
                .index(ElasticsearchClientManager.INDEX)
                .document(ping)
            );
...
        SearchResponse<Ping> search = client.search(s -> s
            .index(ElasticsearchClientManager.INDEX)
            , Ping.class);
        //Thread.sleep(10000L);
        assertEquals(1, search.hits().hits().size());

As you can see I'm not using an Async Client. Yet the assertEquals fails (I get 0 hits). And that's true even if I uncomment the Thread.sleep() line.

However, if I put a breakpoint in my IDE on the assertEquals line and go through it, it works.

Any clue for me?

Thanks!

[dadoonet (David Pilato)]

Remember that if you want to search right after having indexed some documents, you need to refresh the index. Recommended only for integration tests.

[vmassol (Vincent Massol)]

ok cool, didn't know that (and yes I'm writing integration tests :)). I don't remember doing any refresh in the past but maybe the framework I was using was doing it (JestClient).

Thanks @dadoonet that was super helpful and I got it to work by inserting:

client.indices().refresh();