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fix: Specify content length for gcp copy request #3921

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merged 2 commits into from
Mar 23, 2023

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scsmithr
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@scsmithr scsmithr commented Mar 23, 2023

Which issue does this PR close?

N/A

This fixes an issue where copy requests for the GCS object store would error due to a missing content-length header.

Rationale for this change

We hit "Error 411 (Length Required)" on the copyTo endpoint when calling copy_if_not_exists for the GCS object store.

An example error response that we get:

"Generic GCS error: Error performing copy request databases/00000000-0000-0000-0000-000000000000/tmp/299e25c3-a5f5-445c-97ca-28f37f64fb29/lease: response error \"<!DOCTYPE html>\n<html lang=en>\n  <meta charset=utf-8>\n  <meta name=viewport content=\"initial-scale=1, minimum-scale=1, width=device-width\">\n  <title>Error 411 (Length Required)!!1</title>\n  <style>\n    *{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* > body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png) no-repeat;margin-left:-5px}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/branding/googlelogo/2x/googlelogo_color_150x54dp.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:54px;width:150px}\n  </style>\n  <a href=//www.google.com/><span id=logo aria-label=Google></span></a>\n  <p><b>411.</b> <ins>That’s an error.</ins>\n  <p>POST requests require a <code>Content-length</code> header.  <ins>That’s all we know.</ins>\n\", after 0 retries: HTTP status client error (411 Length Required) for url (https://storage.googleapis.com/storage/v1/b/sean-test-glaredb/o/databases/00000000-0000-0000-0000-000000000000/tmp/299e25c3-a5f5-445c-97ca-28f37f64fb29/lease/copyTo/b/sean-test-glaredb/o/databases/00000000-0000-0000-0000-000000000000/visible/lease?ifGenerationMatch=0)"

Getting a reproducible test case for this has been incredibly tricky. We believe that it comes down to whether or not the object_store crate gets compiled with native-tls or rust-tls. See https://github.com/RustomMS/test-object-store for our best shot at reproducing.

I also believe that this change would fix this issue delta-io/delta-rs#878.

What changes are included in this PR?

Explicitly sets content-length to 0 for GCS copyTo request.

Are there any user-facing changes?

No.

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@tustvold tustvold left a comment

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FWIW this was originally included in https://github.com/apache/arrow-rs/pull/3236/files/2033d5aba91a15bda5d5f7d5f5151e96ac99a2f8#r1037123180 but was reverted as I couldn't find a way to reproduce it

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Thank you for debugging this, I can reproduce this locally, wild 😅

Co-authored-by: Raphael Taylor-Davies <1781103+tustvold@users.noreply.github.com>
@scsmithr
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Thank you for debugging this, I can reproduce this locally, wild 😅

Yeah we were quite confused too. Still don't know why that happens though...

@tustvold
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Still don't know why that happens though...

Might be worth raising an issue on reqwest to see if they have any ideas what might be causing it

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