Github user hbdeshmukh commented on the issue:
https://github.com/apache/incubator-quickstep/pull/96
Hi @zuyu
Applied your suggestions. Thanks.
> As a side node for the new DestroyAggregationStateWorkOrder, we don't
need this new method. Instead, using releaseAggregationState and the unique_ptr
in the WorkOrder automatically destroys the content.
This change caused some of the tests (Aggregation operator unit test and
execution generator - select, distinct and join) to fail. I didn't follow up on
why they were failing and stuck to using ``destroyAggregationState`` instead.
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