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[3.9] bpo-43650: Fix MemoryError on zip.read in shutil._unpack_zipfile for large files (GH-25058) #26191

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merged 1 commit into from
May 17, 2021
Merged

[3.9] bpo-43650: Fix MemoryError on zip.read in shutil._unpack_zipfile for large files (GH-25058) #26191

merged 1 commit into from
May 17, 2021

Commits on May 17, 2021

  1. bpo-43650: Fix MemoryError on zip.read in shutil._unpack_zipfile for … 

    …large files (pythonGH-25058)

`shutil.unpack_archive()` tries to read the whole file into memory, making no use of any kind of smaller buffer. Process crashes for really large files: I.e. archive: ~1.7G, unpacked: ~10G. Before the crash it can easily take away all available RAM on smaller systems. Had to pull the code form `zipfile.Zipfile.extractall()` to fix this

Automerge-Triggered-By: GH:gpshead
(cherry picked from commit f32c795)

Co-authored-by: Igor Bolshakov <ibolsch@gmail.com>
    @igorvoltaic @miss-islington
    igorvoltaic authored and miss-islington committed May 17, 2021
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