Github user rathijit commented on the issue:
https://github.com/apache/incubator-quickstep/pull/90
Hi @hbdeshmukh
Stopping the finalize needs some thought as finalize currently also copies
values (TypedValue) to the result ColumnVector. With the new hash table, the
full/combined payload could be copied after only avg. (if it exists) does its
finalize. Extracting TypedValues from the payload without calling the aggregate
methods can be difficult. It would perhaps also need a three-step finalize
(distinct, avg., copy).
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