confluentinc/ksql

Get clickstream demo working with latest ES (v6.6)

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#1087 opened on Mar 28, 2018

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Description

Current demo only works with ES v5.6.x, whereas latest ES is v6.6. Would be good to get the demo working with the latest ES.

Previous attempt failed and ran out of time to problem solve.

@rmoff Also did some work and thinks removing the "index": "not_analyzed" may be the trick, but need to test:

PUT /_template/kafkaconnect/
{
  "index_patterns": "*",
  "settings": {
    "number_of_shards": 1,
    "number_of_replicas": 0
  },
  "mappings": {
    "_default_": {
      "dynamic_templates": [
        {
          "dates": {
            "match": "EXTRACT_TS",
            "mapping": {
              "type": "date"
            }
          }
        },
        {
          "non_analysed_string_template": {
            "match": "*",
            "match_mapping_type": "string",
            "mapping": {
              "type": "keyword"
            }
          }
        }
      ]
    }
  }
}

Contributor guide

Tech stack
elasticsearch
Domain
backenddata
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic understanding of Elasticsearch mappingsFamiliarity with ksql demo setup
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Examine the clickstream demo's Elasticsearch setup, likely in the ksql clickstream demo module. Locate the file where the ES index template is defined (e.g., in a resources or config directory). Apply the change suggested by @rmoff: remove the 'index': 'not analyzed' line and update the mapping to use 'keyword' type instead of string with not analyzed. Test with ES v6.6 to ensure the demo works.