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Backport: Fix segfault in conditional join (#16094) #16100

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bdice
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@bdice bdice commented Jun 26, 2024

Backports #16094 to 24.06 for inclusion in a hotfix release.

Closes rapidsai#16066.

I found a bug that would cause the reported segfault and have fixed it in this PR. When the right table has zero rows, conditional left anti-joins were returning a vector of indices containing garbage data.

Along the way, I refactored several parts of the conditional join tests and added coverage for more cases.

Authors:
  - Bradley Dice (https://github.com/bdice)

Approvers:
  - Nghia Truong (https://github.com/ttnghia)
  - Vyas Ramasubramani (https://github.com/vyasr)
  - Yunsong Wang (https://github.com/PointKernel)

URL: rapidsai#16094
@bdice bdice requested a review from a team as a code owner June 26, 2024 17:05
@bdice bdice requested review from zpuller and srinivasyadav18 and removed request for a team June 26, 2024 17:05
@github-actions github-actions bot added the libcudf Affects libcudf (C++/CUDA) code. label Jun 26, 2024
@vyasr vyasr added bug Something isn't working ! - Hotfix Hotfix is a bug that affects the majority of users for which there is no reasonable workaround non-breaking Non-breaking change labels Jun 26, 2024
@raydouglass raydouglass merged commit 4e34a20 into rapidsai:branch-24.06 Jul 1, 2024
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! - Hotfix Hotfix is a bug that affects the majority of users for which there is no reasonable workaround bug Something isn't working libcudf Affects libcudf (C++/CUDA) code. non-breaking Non-breaking change
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3 participants