Github user amansinha100 commented on the pull request:
https://github.com/apache/drill/pull/462#issuecomment-210085324
I think additional support may be needed; the hash table only stores the
equality join keys, so the generated code in ChainedHashTable is targeted to
the those columns. For the additional columns you will need to keep track of
them (I haven't thought through the details yet.)
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