Josh Elser created CALCITE-1218:
-----------------------------------

             Summary: Mishandling of uncaught exceptions results in no 
ErrorResponse sent to client
                 Key: CALCITE-1218
                 URL: https://issues.apache.org/jira/browse/CALCITE-1218
             Project: Calcite
          Issue Type: Bug
          Components: avatica
            Reporter: Josh Elser
            Assignee: Josh Elser
            Priority: Blocker
             Fix For: avatica-1.8.0


In doing some testing of the Kerberos auth for Avatica, I noticed another area 
(in AvaticaProtobufHandler) which did not create and return an ErrorResponse to 
the user. This shows up in the client with an obtuse error message of "Cannot 
find parser for empty message class" (or similar).

Before 1.8.0 comes out, we need to:

# Squash this issue once and for all (catch all exceptions and create an 
ErrorResponse)
# Improve the client error message



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