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Posted to github@datafusion.apache.org by "neilconway (via GitHub)" <gi...@apache.org> on 2026/06/11 14:56:00 UTC
[I] `ArrayMap` maps probe keys to buckets incorrectly on 32-bit hosts [datafusion]
neilconway opened a new issue, #22910:
URL: https://github.com/apache/datafusion/issues/22910
### Describe the bug
ArrayMap bucket lookups computed `key.wrapping_sub(offset) as usize`, and then bounds-checked the result after the cast. On 64-bit hosts, that is fine, but on 32-bit hosts, the cast will truncate the computed bucket offset to its low 32 bits. Given a large probe key whose low 32 bits are a valid bucket array index, this can produce incorrect results.
### To Reproduce
_No response_
### Expected behavior
_No response_
### Additional context
_No response_
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Re: [I] `ArrayMap` maps probe keys to buckets incorrectly on 32-bit hosts [datafusion]
Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #22910: `ArrayMap` maps probe keys to buckets incorrectly on 32-bit hosts
URL: https://github.com/apache/datafusion/issues/22910
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Re: [I] `ArrayMap` maps probe keys to buckets incorrectly on 32-bit hosts [datafusion]
Posted by "neilconway (via GitHub)" <gi...@apache.org>.
neilconway commented on issue #22910:
URL: https://github.com/apache/datafusion/issues/22910#issuecomment-4681893457
take
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