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apache / arrow

Apache Arrow is a multi-language toolbox for accelerated data interchange and in-memory processing
https://arrow.apache.org/
Apache License 2.0
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[C++] Kernel functions for determining monotonicity (ascending or descending) for well-ordered types #17582

Open asfimport opened 7 years ago

asfimport commented 7 years ago

These kernels must offer some stateful variant so that monotonicity can be determined across chunked arrays

Reporter: Wes McKinney / @wesm

Related issues:

Note: This issue was originally created as ARROW-1569. Please see the migration documentation for further details.

asfimport commented 4 years ago

Wes McKinney / @wesm: This can be implemented as a ScalarAggregateFunction. We should consider how to enable aggregate functions to short-circuit

asfimport commented 2 years ago

Antoine Pitrou / @pitrou: @ianmcook What is your take on the usefulness of this?

asfimport commented 2 years ago

Todd Farmer / @toddfarmer: This issue was last updated over 90 days ago, which may be an indication it is no longer being actively worked. To better reflect the current state, the issue is being unassigned. Please feel free to re-take assignment of the issue if it is being actively worked, or if you plan to start that work soon.