[FLINK-10015] Use Elasticsearch's ESIntegTestCase to rework 5.x and 6.x's ITCases

• Type: Improvement
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Component/s: Connectors / ElasticSearch, Tests
• Labels: auto-deprioritized-major auto-deprioritized-minor
• Assignee: Unassigned
• Reporter: Tzu-Li (Gordon) Tai
• Created: 01/Aug/18 09:58
• Updated: 06/Dec/21 10:39

Description

Elasticsearch provides a ESIntegTestCase base class that provides the functionality to write integration tests against an Elasticsearch node: https://www.elastic.co/guide/en/elasticsearch/reference/current/integration-tests.html

Our current Elasticsearch integration tests still test against an embedded Elasticsearch node (i.e., directly instantiating an Elasitcsearch Node), and is an usage pattern that Elasticsearch is suggesting against since 5.x.

We should look into the possibility of using ESIntegTestCase instead.