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https://issues.apache.org/jira/browse/DRILL-2503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14370232#comment-14370232
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Chris Westin commented on DRILL-2503:
-------------------------------------
Where's a good place in jdbc land to add this test case permanently (as part of
the fix)?
> 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
> Components: Execution - Codegen
> Affects Versions: 0.8.0
> Reporter: Daniel Barclay (Drill)
> Assignee: Chris Westin
> Priority: Critical
> Attachments: Drill2503CaseManyWhensFailsTest.java
>
>
> 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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