Nico Kruber created FLINK-9163:

             Summary: Harden e2e tests' signal traps and config restoration 
during abort
                 Key: FLINK-9163
             Project: Flink
          Issue Type: Bug
          Components: Tests
    Affects Versions: 1.5.0, 1.6.0, 1.5.1
            Reporter: Nico Kruber
            Assignee: Nico Kruber
             Fix For: 1.5.0

Signal traps on certain systems, e.g. Linux, may be called concurrently when 
the trap is caught during its own execution. In that case, our cleanup may just 
be wrong and overly eagerly also deleting {{flink-conf.yaml}}.

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