linrrzqqq opened a new pull request, #57180:
URL: https://github.com/apache/doris/pull/57180
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
1. alias `xxhash3_64` for `xxhash_64`
2. Support function `murmur_hash3_64_v2`
Before:
```text
mysql> SELECT MURMUR_HASH3_64('1000209601_1756808272');
+------------------------------------------+
| MURMUR_HASH3_64('1000209601_1756808272') |
+------------------------------------------+
| 1680830166030441144 |
+------------------------------------------+
```
This result differs from the return value of directly calling mmh3.hash64 in
other languages, because external APIs all use mmh3_128 for calculation and
then truncate the first 64 bits. The 64-bit version inside Doris compared to
the 128-bit version lacks an h2 register (the 64-bit version only has h1),
which will affect the final mixing calculation of h1 and h2 in the algorithm,
leading to issues in the result.
After support:
```text
mysql> SELECT MURMUR_HASH3_64_V2('1000209601_1756808272');
+---------------------------------------------+
| MURMUR_HASH3_64_V2('1000209601_1756808272') |
+---------------------------------------------+
| 4038800892574899471 |
+---------------------------------------------+
```
The result now is completely the same as the API call.
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [x] Yes. https://github.com/apache/doris-website/pull/2993
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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