[3.9] bpo-43650: Fix MemoryError on zip.read in shutil._unpack_zipfile for large files (GH-25058) #26191
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…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>
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May 17, 2021
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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 formzipfile.Zipfile.extractall()to fix thisAutomerge-Triggered-By: GH:gpshead
(cherry picked from commit f32c795)
Co-authored-by: Igor Bolshakov ibolsch@gmail.com
https://bugs.python.org/issue43650