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Neal Richardson updated ARROW-13969: ------------------------------------ Fix Version/s: (was: 6.0.0) 7.0.0 > [C++][Compute] Implement SelectKStable > -------------------------------------- > > Key: ARROW-13969 > URL: https://issues.apache.org/jira/browse/ARROW-13969 > Project: Apache Arrow > Issue Type: Improvement > Components: C++ > Reporter: Alexander > Priority: Major > Labels: analytics, kernel, query-engine > Fix For: 7.0.0 > > > PR [https://github.com/apache/arrow/pull/11019] implements SelectKUnstable. > > Some previous result of SelectKUnstable using StableHeap is shown here: > [https://github.com/apache/arrow/pull/11019#issuecomment-913977337] > > So, implementation of SelectKStable should explore how to implement this > algorithm using StablePartition + stable_sorting. > > Final note: As mentioned here: > [https://github.com/apache/arrow/pull/11019#discussion_r706231044] > .e. instead of {{select_k_options.is_top_k()}} have 1) a check that there are > sort keys and then 2) check {{select_k_options.sort_keys[0].order == > Descending}} instead, inside the function definition. > !https://github.githubassets.com/images/icons/emoji/unicode/1f44d.png|width=20,height=20! > 1 > -- This message was sent by Atlassian Jira (v8.3.4#803005)