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Type:
Improvement
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Storage Engines
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8
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2023-11-28 - Anthill Tiger
In SERVER-77705 we want to update hash functions, used as a checksum for files, created by sorter during $sort or index builds.
mathias@mongodb.com suggested to use WiredTiger’s crc32c implementation.
There is a public wiredtiger_crc32c_func()(buf, len) function.
However, in sorter, we currently hash things piece-wise:
https://github.com/mongodb/mongo/blob/7683c537daa6be9b17713a0d7b2ffcb701f80f15/src/mongo/db/sorter/sorter.cpp#L108
We need to preserve this interface for backward-compatibility.
Internally some crc32c implementation already have an interface that accept initial value: https://github.com/mongodb/mongo/blob/7683c537daa6be9b17713a0d7b2ffcb701f80f15/src/third_party/wiredtiger/src/checksum/zseries/crc32-s390x.c#L37
Could you please make this a public API via something like wiredtiger_crc32c_with_seed_func()(seed, buf, len).
- is depended on by
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SERVER-77705 Replace MurmurHash3 with crc32c in sorter.cpp
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- Closed
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- Open
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