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AWS Lambda does not support multiprocessing #1684

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fspigel opened this issue Dec 10, 2024 · 1 comment
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AWS Lambda does not support multiprocessing #1684

fspigel opened this issue Dec 10, 2024 · 1 comment
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fspigel commented Dec 10, 2024 •
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When running polars code within an AWS lambda environment, calling some functions produces OSError: [Errno 38] Function not implemented due to multithreading.

Specifically a call to polars.from_pandas() causes the exception when it gets to

File "/var/lang/lib/python3.11/multiprocessing/synchronize.py", line 57, in __init__
    sl = self._semlock = _multiprocessing.SemLock(
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fspigel commented Dec 10, 2024

This issue was submitted to the wrong github repo by mistake - closing

@fspigel fspigel closed this as not planned Won't fix, can't repro, duplicate, stale Dec 10, 2024
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@fspigel @azory-ydata