Lars Volker created IMPALA-5785:

             Summary: Purge local connection pool if node statestore marks node 
                 Key: IMPALA-5785
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 2.9.0
            Reporter: Lars Volker
            Priority: Critical
             Fix For: Impala 2.10.0

>From time to time there seem to be issues with stale connection pool entries 
>when nodes restart. In cases where the backend receives an update from the 
>statestore that a node has gone offline, we should remove connections to that 
>node from the connection pool.

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