[FLINK-25222] Remove NetworkFailureProxy used for Kafka connector tests

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.14.0, 1.15.0
• Fix Version/s: 1.14.3, 1.15.0
• Component/s: Connectors / Kafka, Test Infrastructure
• Labels: pull-request-available
• Assignee: Fabian Paul
• Reporter: Fabian Paul
• Created: 08/Dec/21 13:51
• Updated: 16/Dec/21 00:58
• Resolved: 15/Dec/21 13:07

Description

Recently the number of Kafka connector tests either hitting a timeout due to blocked networking or corrupted network responses increased significantly. 

We think it is caused by our custom network failure implementation since all the tests are for the legacy FlinkKafkaProducer or FlinkKafkaConsumer we can safely remove them because we will not add more features to this connector, to increase the overall stability.

Issue Links

• links to: GitHub Pull Request #18057
• links to: GitHub Pull Request #18101