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David Li commented on ARROW-13309: ---------------------------------- This is kind of tricky right now since we'll have to keep all the data materialized somewhere. The equivalent scalar aggregate kernel is actually a vector kernel and hence sidesteps this. > [C++] Implement hash_aggregate quantile kernel > ---------------------------------------------- > > Key: ARROW-13309 > URL: https://issues.apache.org/jira/browse/ARROW-13309 > Project: Apache Arrow > Issue Type: Improvement > Components: C++ > Reporter: David Li > Priority: Major > > Requires ARROW-12759. > We have a scalar aggregate kernel for this already and hopefully the > implementation can be reused. -- This message was sent by Atlassian Jira (v8.3.4#803005)