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From "Daniel Barclay (Drill) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2503) Having many WHENs causes ClassReader.accept()/EXPAND_FRAMES error
Date Thu, 19 Mar 2015 21:10:38 GMT
Daniel Barclay (Drill) created DRILL-2503:
---------------------------------------------

             Summary: Having many WHENs causes ClassReader.accept()/EXPAND_FRAMES error
                 Key: DRILL-2503
                 URL: https://issues.apache.org/jira/browse/DRILL-2503
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Daniel Barclay (Drill)


Having many WHEN clauses in CASE expressions in a query yields a error message saying "Query
failed: RemoteRpcException: Failure while running fragment., ClassReader.accept() should be
called with EXPAND_FRAMES flag".

(It's not just the number of WHEN clauses in each CASE expression that matters, but the total
number.   (Deleting some from either caused the query to work again, and then adding more
WHENs in the other CASE expression caused the query to fail again.))



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