[#2601] feat(spark): Overlapping decompression for shuffle read #2602
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What changes were proposed in this pull request?
This PR is to introduce the overlapping decompression for the shuffle reading for the better shuffle speed.
Why are the changes needed?
for #2601
When applying the #2598 into the benchmark of terasort 100g, I found some bottleneck for the decompression time in the read phase.
Based on a 100 GB Terasort benchmark, the results are impressive, reducing shuffle read time by 50% after applying this PR.
Does this PR introduce any user-facing change?
Yes
How was this patch tested?