Mason Chen created FLINK-27479: ---------------------------------- Summary: HybridSource refreshes availability future Key: FLINK-27479 URL: https://issues.apache.org/jira/browse/FLINK-27479 Project: Flink Issue Type: Improvement Components: Connectors / Common Affects Versions: 1.14.4 Reporter: Mason Chen Fix For: 1.15.1
HybridSourceReader needs to refresh the availability future according to the underlying reader. It currently maintains its own future and completes it after the sub-reader's availability future is complete. However, the implementation does not refresh the future again until the reader receives a switch event. This can cause a tight loop with the Flink runtime repeatedly invoking pollNext() and high CPU utilization. To solve this, we can reuse the MultipleFuturesAvailabilityHelper to manage the lifecycle of the availability future. -- This message was sent by Atlassian Jira (v8.20.7#820007)