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Support read compressed files in COPY statemente #5380

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Tracked by #4736
BohuTANG opened this issue May 14, 2022 · 4 comments 路 Fixed by #5655
Closed
Tracked by #4736

Support read compressed files in COPY statemente #5380

BohuTANG opened this issue May 14, 2022 · 4 comments 路 Fixed by #5655
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@Xuanwo
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A-storage Area: databend storage
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v0.8

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@BohuTANG BohuTANG mentioned this issue May 14, 2022
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@BohuTANG BohuTANG changed the title Support read compressed files like <code class="notranslate">xxx.csv.gz (archived file support like <code class="notranslate">tar or <code class="notranslate">zip` is under development) Support read compressed files May 14, 2022
@BohuTANG BohuTANG added the A-storage Area: databend storage label May 14, 2022
@BohuTANG BohuTANG changed the title Support read compressed files Support read compressed files in COPY statement May 14, 2022
@BohuTANG BohuTANG mentioned this issue May 14, 2022
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@Xuanwo Xuanwo added this to the v0.8 milestone May 20, 2022
@Xuanwo Xuanwo added A-storage Area: databend storage and removed A-storage Area: databend storage labels May 20, 2022
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Xuanwo commented May 20, 2022 •
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This issue is blocked by integrating with the new format trait.

The original opendal design will decompress the IO stream in async runtime which is not expected by the new processor.

I'm working on it to make it possible:

  • IO on async runtime
  • Decompress (which is CPU bound) on sync runtime

Work logged: https://note.xuanwo.io/#/page/opendal%20buffered%20io

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Xuanwo commented May 20, 2022 •
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Have a discussion with async-compression: Nullus157/async-compression#150

Update @ 2022-05-20

The author of async-compression does have a plan to refactor so that we can use the internal codec staff. I will use some workaround for now.

This was referenced May 20, 2022
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Xuanwo commented May 26, 2022 •
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I believe we get the correct answer now: apache/opendal#289

@Xuanwo Xuanwo mentioned this issue May 29, 2022
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Xuanwo commented May 29, 2022

Sorry to keep you waiting, let's set sail!

In PR #5655, we got this works.

@Xuanwo Xuanwo changed the title Support read compressed files in COPY statement Support read compressed files in COPY statemente Jun 9, 2022
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A-storage Area: databend storage
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Databend Storage Layer
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Milestone
v0.8
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feat: Add decompress support for COPY INTO and streaming loading Xuanwo/databend
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@BohuTANG @Xuanwo