[FLINK-11397] Speed up initialization of AbstractStreamOperatorTestHarness

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Affects Version/s: 1.8.0
• Component/s: API / DataStream, Tests
• Assignee: Unassigned
• Reporter: Zili Chen
• Created: 21/Jan/19 08:02
• Updated: 01/Mar/19 15:55
• Resolved: 01/Mar/19 15:55

Description

Currently Kafka connector tests are unbearably slow, which is tracked by FLINK-10603. With investigation, the construction and initialization of AbstractStreamOperatorTestHarness is quite slow.

When walk down the code, it amazed me that mockTask = mock(StreamTask.class); cost a few of second to finish. If we can introduce a test class instead of mock framework, the situation might be loosen.

cc Zentol pnowojski