I need help asap please for fieldData

Elastic Stack Elasticsearch
1

I am wrote this code to make aggregation :

public static void createIndex() throws IOException {

    CreateIndexRequest request = new CreateIndexRequest("testindexcreate2");
    request.settings(Settings.builder()
            .put("index.number_of_shards", 3)
            .put("index.number_of_replicas", 2)
    );

    XContentBuilder builder = XContentFactory.jsonBuilder();
    builder.startObject();
    {
        builder.startObject("properties");
        {
            builder.startObject("message");
            {
                builder.field("type", "text");
                builder.field("fielddata",true);
            }
            builder.endObject();
        }
        builder.endObject();
    }
    builder.endObject();
    request.mapping(String.valueOf(builder));
    CreateIndexResponse createIndexResponse = restHighLevelClient.indices().create(request, RequestOptions.DEFAULT);


}

public static void getAggregation() throws IOException {
MinAggregationBuilder aggregation =
AggregationBuilders
.min("agg")
.field("salary");

    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    SearchRequest searchRequest = new SearchRequest();
    searchSourceBuilder.aggregation(aggregation);
    searchRequest.source(searchSourceBuilder);

    SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
    System.out.println(searchResponse);
    Min agg = searchResponse.getAggregations().get("agg");


    System.out.println(agg.getValue());
}

**** The problem is fielddata must equal true , i already define it equal true above ,, what the problem ?

Please help me

2

Your indexing code and search code use different field names?
"message" vs "salary".
Asking for the minimum of salary makes sense as opposed to asking for the min of message.

3

insted of salary , i need to define field like this

XContentBuilder builder = XContentFactory.jsonBuilder();
builder.startObject();
{
builder.startObject("properties");
{
builder.startObject("message");
{
builder.field("id", "text");
builder.field("fielddata",true);
}
builder.startObject("");
{
builder.field("age", "text");
builder.field("fielddata",true);
}
{
builder.field("salary", "text");
builder.field("fielddata",true);
}
builder.endObject();
}
builder.endObject();
}

4

I'm not sure why you would consider age and salary as a text type instead of numbers.

5

i make like this

public static void insertNewRecord(TestIndexDoc indexDoc) throws IOException {

    Map<String, Object> dataMap = new HashMap<String, Object>();
    dataMap.put("id", indexDoc.getId());
    dataMap.put("age", indexDoc.getAge());
    dataMap.put("salary",indexDoc.getSalary());
    IndexRequest indexRequest = new IndexRequest( "testindexcreate5")
            .source(dataMap);
    IndexResponse response = restHighLevelClient.index(indexRequest , RequestOptions.DEFAULT);
}

and aggregation code :

public static void getAggregation() throws IOException {
MinAggregationBuilder aggregation =
AggregationBuilders
.min("agg")
.field("salary");

    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
    SearchRequest searchRequest = new SearchRequest();
    searchRequest.indices("testindexcreate5");
    searchSourceBuilder.aggregation(aggregation);
    searchRequest.source(searchSourceBuilder);

    SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);
    Min agg = searchResponse.getAggregations().get("agg");


    System.out.println(agg.getValue());
}

its same problem ?

6

this code for create index

public static void createIndex() throws IOException {

    CreateIndexRequest request = new CreateIndexRequest("testindexcreate5");
    request.settings(Settings.builder()
            .put("index.number_of_shards", 3)
            .put("index.number_of_replicas", 2)
    );

    XContentBuilder builder = XContentFactory.jsonBuilder();
    builder.startObject();
    {
       // builder.startObject("properties");
        //{
            builder.startObject("id");
            {
                builder.field("type", "number");
                builder.field("fielddata",true);
            }
            builder.endObject();
            builder.startObject("age");
            {
                builder.field("type", "number");
                builder.field("fielddata",true);
            }
            builder.endObject();
            builder.startObject("salary");
            {
                builder.field("type", "number");
                builder.field("fielddata",true);
            }
            builder.endObject();
        //}
     //   builder.endObject();
    }
    builder.endObject();
    request.mapping(String.valueOf(builder));
    CreateIndexResponse createIndexResponse = restHighLevelClient.indices().create(request, RequestOptions.DEFAULT);


}
7

People very rarely need to use fieldData and I don't see any particular reason why you need it here.

See https://www.elastic.co/guide/en/elasticsearch/reference/current/fielddata.html#before-enabling-fielddata

8

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