ReemaAlzaid opened a new pull request, #12812:
URL: https://github.com/apache/gluten/pull/12812
<!--
Thank you for submitting a pull request! Here are some tips:
1. For first-time contributors, please read our contributing guide:
https://github.com/apache/gluten/blob/main/CONTRIBUTING.md
2. If necessary, create a GitHub issue for discussion beforehand to avoid
duplicate work.
3. If the PR is specific to a single backend, include [VL] or [CH] in the PR
title to indicate the
Velox or ClickHouse backend, respectively.
4. If the PR is not ready for review, please mark it as a draft.
-->
## What changes are proposed in this pull request?
<!--
Provide a clear and concise description of the changes introduced in this PR.
Ensure the PR description aligns with the code changes, especially after
updates.
If applicable, include "Fixes #<GitHub_Issue_ID>" to automatically close the
corresponding issue
when the PR is merged.
-->
With cuDF enabled, broadcast hash joins run as CudfHashJoin, which builds
its own GPU hash table from the build-side value stream and cannot consume the
prebuilt CPU OpaqueHashTable created by the build-once-per-executor
optimization. Feeding it Iterator.empty silently produced empty join results.
Skip the prebuilt-table path and stream the broadcast relation batches when
cuDF is enabled, the same path shuffle joins use on GPU. Skipping the CPU cache
build also keeps hybrid mode correct: a CPU-fallback join finds no cached table
and builds from the stream as usual.
## How was this patch tested?
Adds a CudfTest-tagged regression suite. The tag is excluded in CI, which
has no GPU test runners; run on a GPU host with -DtagsToExclude=None.
<!--
Describe how the changes were tested, if applicable.
Include new tests to validate the functionality, if necessary.
For UI-related changes, attach screenshots to demonstrate the updates.
-->
## Was this patch authored or co-authored using generative AI tooling?
<!--
If generative AI tooling has been used in the process of authoring this
patch, please include the
phrase: 'Generated-by: ' followed by the name of the tool and its version.
If no, write 'No'.
Please refer to the [ASF Generative Tooling
Guidance](https://www.apache.org/legal/generative-tooling.html) for details.
-->
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
