[FLINK-25793] Fix high throughput rate of AsyncSinkWriter for throttled destination

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: Connectors / Kinesis
• Labels: pull-request-available
• Assignee: Ahmed Hamdy
• Reporter: Zichen Liu
• Created: 24/Jan/22 19:12
• Updated: 10/Mar/22 15:06
• Resolved: 24/Feb/22 15:56

Description

Bug:

The Async Sink Base sink is not limiting throughput to the destination and therefore exceeding rate limits

Cause:

We are not throttling our requests downstream at all.

We should monitor for requests that have failed with ThroughputExceeded exceptions and reduce the throughput accordingly.

Issue Links

• relates to: FLINK-25792 Async Sink Base is too being flushed too frequently resulting in backpressure even when buffer is near empty
• links to: GitHub Pull Request #18880
• links to: GitHub Pull Request #18902