Github user StevenMPhillips commented on the pull request:
https://github.com/apache/drill/pull/189#issuecomment-149390304
I actually have done some additional work on this branch to extend it to
work with other operators. But I ran into the Scalar Replacement bug that was
mentioned in the JIRA. So I didn't add the changes to the pull request.
The tests fail because the current PR assumes there is only a single
MappingSet, and thus the generated code is all going into the same methods. My
solution was to clear the evaluated expression cache whenever the
setMappingSet() method is called.
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