Antoine Pitrou created ARROW-10287:
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Summary: [C++] Avoid std::random_device whenever possible
Key: ARROW-10287
URL: https://issues.apache.org/jira/browse/ARROW-10287
Project: Apache Arrow
Issue Type: Wish
Components: C++
Reporter: Antoine Pitrou
Assignee: Antoine Pitrou
I just tried running the tests on a default build on Ubuntu 20.04 with an AMD
Ryzen CPU (where presumably RDRAND can't be relied on, but I don't know if
that's the underlying reason), and the tests appear to hand blocking on
{{std::random_device}} at some point. I suppose some versions of libstdc++ will
use {{/dev/random}} instead of {{/dev/urandom}} (which is a bad idea in itself).
We should probably try to minimize our usage of {{std::random_device}}. After
all, we're not generating cryptographic keys or anything.
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