Skip to content

Elasticsearch Stream Output

Compatible Spark/Pyspark

Overview

Like our elastic_batch_output, you can use this node to write continuously to your elasticsearch cluster...

Example(s)

Below, we illustrate an example on inserting data continuously from a kafka broker to an elasticsearch cluster:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
{
    job: [
        {
            type: kafka_stream_input
            component: input
            settings: {
                topic: mytenant_apache_httpd_archiving
                brokers: [
                    {
                        host : localhost
                        port : 9092
                    }
                ]
                start_offset_strategy : latest
            }
            publish: [
                    {
                        stream: data
                    }
                ]
        }
        {
            type: sql
            component: sql
            settings: {
                statement: SELECT  CAST(value AS STRING) AS tmp FROM input_data
            }
            subscribe: [
                {
                    component: input
                    stream: data
                }
            ]
            publish: [
                { 
                    stream: data
                }
            ]
        }
        {
            type: elastic_stream_output
            component: elastic
            settings: {
                nodes: [
                    localhost
                ]
                port: 9200
                index: myesstream
                type: _doc
                checkpoint_location: /tmp/my_es_checkpoint
            }
            subscribe: [
                {
                    stream: data
                    component: sql
                }
            ]
        }
    ]
}

Configuration(s)

  • nodes: List

    Description: [REQUIRED] a list of hostname.

  • port: Integer

    Description: [REQUIRED] port to be used on your elasticsearch cluster.

  • index: String

    Description: [REQUIRED] name of the index where data will be inserted...

  • type: String

    Description: [REQUIRED] each document inserted will be tagged as a document type.

  • checkpoint_location: String

    Description: [REQUIRED] path where recovery data will be store in case you want to resume from a failure...

  • elastic_settings: Map

    Description: [Optional] Specify ES-Hadoop options as key-value: https://www.elastic.co/guide/en/elasticsearch/hadoop/current/configuration.html. Some are them are disabled by default as they are used by our internal code.