[jira] [Created] (FLINK-8065) Extend exception message if client is already shut down

[Chesnay Schepler (JIRA)]

Chesnay Schepler created FLINK-8065:
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             Summary: Extend exception message if client is already shut down
                 Key: FLINK-8065
                 URL: https://issues.apache.org/jira/browse/FLINK-8065
             Project: Flink
          Issue Type: Improvement
          Components: Queryable State
    Affects Versions: 1.4.0
            Reporter: Chesnay Schepler


Calling {{QueryableStateClient#getKvState}} after shutting it down leads to 
this rather short exception message:

{code}
Caused by: java.lang.IllegalStateException: Shut down
        at 
org.apache.flink.queryablestate.network.Client.sendRequest(Client.java:136)
        at 
org.apache.flink.queryablestate.client.QueryableStateClient.getKvState(QueryableStateClient.java:251)
{code}

We can extend this just a little bit.



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