Till Rohrmann created FLINK-25849: ------------------------------------- Summary: Differentiate TaskManager sessions Key: FLINK-25849 URL: https://issues.apache.org/jira/browse/FLINK-25849 Project: Flink Issue Type: Sub-task Components: Runtime / Coordination Affects Versions: 1.15.0 Reporter: Till Rohrmann Assignee: Till Rohrmann
With the introduction of configurable {{ResourceID}} for {{TaskManager}} processes, it can happen that a restarted {{TaskManager}} process will be restarted with the same {{ResourceID}}. When it now tries to register at the {{JobMaster}}, the {{JobMaster}} won't recognize it as a new instance because it only compares the {{ResourceID}}. As a consequence, the {{JobMaster}} things that this is a duplicate registration and ignores it. It would be better if the {{TaskManager}} would send a session id with the registration that could then be used to decide whether a new instance tries to register at the {{JobMaster}} and, therefore, the old one needs to be disconnected or whether the registration attempt is a duplicate. -- This message was sent by Atlassian Jira (v8.20.1#820001)