Ahmed Hamdy created FLINK-31872: ----------------------------------- Summary: CLONE - AsyncSinkWriter Performance regression due to AIMD rate limiting strategy Key: FLINK-31872 URL: https://issues.apache.org/jira/browse/FLINK-31872 Project: Flink Issue Type: Bug Components: Connectors / Common, Connectors / Firehose, Connectors / Kinesis Affects Versions: 1.16.0, aws-connector-3.0.0, 1.16.1, aws-connector-4.0.0, aws-connector-4.1.0 Reporter: Ahmed Hamdy Assignee: Ahmed Hamdy Fix For: 1.16.2, 1.18.0, 1.17.1, aws-connector-4.2.0
h1. Issue While benchmarking the {{KinesisStreamSink}} for 1.15 against the legacy {{FlinkKinesisProduced}} , it is observed that the new sink has a performance regression against the deprecated sink for same environment setting. Further investigation identified that the AIMD Ratelimiting strategy is the bottleneck for the regression. Attached results for {{KinesisStreamSink}} against {FlinkKinesisProducer} and {KinesisStreamSink} after disabling {{AIMDRatelimitingStrategy}} h2. Environment Settings - Benchmarking was performed on AWS KDA. - Application logic is just sending records downstream - Application parallelism was tested to be 1. - Kinesis stream number of shards was tested with 8 and 12. - payload size was 1Kb and 100Kb. -- This message was sent by Atlassian Jira (v8.20.10#820010)