yixiutt opened a new pull request, #11557:
URL: https://github.com/apache/doris/pull/11557
In our origin design, we calc delete bitmap in publish txn, and this
operation
will cost too much time as it will load segment data and lookup row key in
pre
rowset and segments.And publish version task should run in order, so it'll
lead
to timeout in publish_txn.
In this pr, we seperate delete_bitmap calculation to tow part, one of it
will be
done in flush mem table, so this work can run parallel. And we calc final
delete_bitmap in publish_txn, get a rowset_id set that should be included and
remove rowsets that has been compacted, the rowset difference between
memtable_flush
and publish_txn is really small so publish_txn become very fast.In our test,
publish_txn cost about 10ms.
# Proposed changes
Issue Number: close #xxx
## Problem summary
Describe your changes.
## 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
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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