Tzu-Li (Gordon) Tai created FLINK-19199: -------------------------------------------
Summary: Add execution attempt ID to feedback channel keys Key: FLINK-19199 URL: https://issues.apache.org/jira/browse/FLINK-19199 Project: Flink Issue Type: Task Components: Stateful Functions Reporter: Tzu-Li (Gordon) Tai Assignee: Tzu-Li (Gordon) Tai The feedback brokers identify a single pair of producer / consumer with a {{SubtaskFeedbackKey}}, which is uniquely identified within a job by only the subtask index. This can potentially become an issue in job restart scenarios, since the feedback brokers are static fields, and are durable across non-TM failure job restarts. Currently it is not a problem because we do clear broker channels on close, but adding an extra execution attempt ID into the {{SubtaskFeedbackKey}} can make things safer. -- This message was sent by Atlassian Jira (v8.3.4#803005)