[FLINK-12151] Drop Elasticsearch 1 connector

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.9.0
• Component/s: Connectors / ElasticSearch
• Labels: pull-request-available
• Release Note: The Elasticsearch 1 connector has been dropped and will no longer receive patches. Users may continue to use connector from a previous series (like 1.8) with newer versions of Flink.
• Assignee: Chesnay Schepler
• Reporter: Chesnay Schepler
• Created: 10/Apr/19 08:22
• Updated: 11/Apr/19 13:56
• Resolved: 11/Apr/19 13:56

Description

I'm proposing to remove the connector for elasticsearch 1.

The connector is used significantly less than more recent versions (2&5
are downloaded 4-5x more), and hasn't seen any development for over a
hear, yet still incurred maintenance overhead due to licensing and testing.

The issue was discussed on the ML; no concerns were raised.

ML discussion: https://lists.apache.org/thread.html/41bf3a6f7d3d21dc4311607cccb41f2f17daf251ba70c4fe267c094d@%3Cdev.flink.apache.org%3E

Issue Links

• supercedes: FLINK-12099 Elasticsearch(1)SinkITCase fails on Java 9
• links to: GitHub Pull Request #8140