guan404ming commented on PR #680:
URL: https://github.com/apache/mahout/pull/680#issuecomment-3615052308
> Looks good, but the current implementation forces a memory copy (Vec
allocation) even when we want to use Arrow directly. We should refactor io.rs
so that read_parquet_to_arrow is the base implementation, ensuring true
zero-copy performance for the pipeline.
origin: Disk -> Arrow -> Vec (copy) -> Arrow (copy) -> GPU
we need: Disk -> Arrow -> Arrow (Zero-copy Reference) -> GPU (through
Pointer)
I think so, plz correct me if I'm wrong.
I think you're right, thanks for pointing out. I've updated the
implementation to only.
Disk ---------> Arrow Buffers (pointer only) ----------> GPU
Decode
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