Devavret Makkar

List lexicographic comparator

16

Contributes to #10186 This PR enables lexicographic comparisons between list columns. The comparison is robust to arbitrary levels of nesting, but does not yet support lists of (lists of...) structs....

[BUG] ORC string sum statistics are wrong

3

When reading the statistics for an ORC file written by cuDF, the result for sum is wrong when read using cuDF and absent when using pyorc. ```python In [1]: import...

[FEA] Story - Supporting row operators on nested types

2

There have been several requests to enable row operators on nested types. This issue is to track all related issues as a story. There are three types of row operators...

Add context to cache key

1

So that kernels made for one context don't run on another.

[FEA] Block level bulk APIs

1

Currently the bulk APIs are host calls which operate on one map. We have a use case where we have multiple small maps defined on a slice of pre-allocated slot...

fix(cudf): Fix empty vector handling in FilterProject and HashAggregation

1

`cudf::table` does not handle the case where the data is empty but size is non-zero. This resulted in a bug when running queries with a count(*) with presto-cudf because the...