starocean999 opened a new pull request, #11595:
URL: https://github.com/apache/doris/pull/11595
# Proposed changes
Issue Number: close #xxx
## Problem summary
Although RE2 object is thread-safe, but the thread conflict would impact the
performance a lot. This pr changes the function context to THREAD_LOCAL to
improve performance. For example the sql "SELECT REGEXP_REPLACE(Referer,
'^https?://(?:www\.)?([^/]+)/.*$', '\1') AS k FROM hits GROUP BY k limit 10;"
runs much faster using THREAD_LOCAL context
## Checklist(Required)
1. Does it affect the original behavior:
- [ ] Yes
- [ ] No
- [ ] I don't know
2. Has unit tests been added:
- [ ] Yes
- [ ] No
- [ ] No Need
3. Has document been added or modified:
- [ ] Yes
- [ ] No
- [ ] No Need
4. Does it need to update dependencies:
- [ ] Yes
- [ ] No
5. Are there any changes that cannot be rolled back:
- [ ] Yes (If Yes, please explain WHY)
- [ ] No
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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