[jira] [Created] (FLINK-22108) Ephemeral socket address was checkpointed to state and restored back in CollectSinkOperatorCoordinator

[Shang Yuanchun (Jira)]

Kezhu Wang created FLINK-22108:
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             Summary: Ephemeral socket address was checkpointed to state and restored back in CollectSinkOperatorCoordinator
                 Key: FLINK-22108
                 URL: https://issues.apache.org/jira/browse/FLINK-22108
             Project: Flink
          Issue Type: Bug
          Components: API / DataStream
    Affects Versions: 1.13.0
            Reporter: Kezhu Wang


{{CollectSinkOperatorCoordinator}} checkpointed its {{address}} field to state and restored back. That field is listener address of {{CollectSinkFunction}}. After {{resetToCheckpoint}} (eg. global failover}}, {{address}} is meaningless. If client request comes before {{CollectSinkAddressEvent}}, it will use that meaningless address for connection. In best situation, error happens, and nothing hurts. In bad situation, no one knows where the restored address points to now. 

cc  [~TsReaper] [~ykt836]



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