felixwluo opened a new pull request, #56361:
URL: https://github.com/apache/doris/pull/56361
Problem Summary:
## `Optimization only for random bucketing`
### Optimization points
- add the random_tablet_switching_threshold property to the stream load, the
default value is 10M (number of entries)
- added the parameter random_distribution_tablet_switching_threshold
- or a rondom bucketed table, with the default value false for the
load_to_single_tablet attribute and the random_tablet_switching_threshold
attribute set to 1000, two stream loads are performed. The table has only two
buckets (tablets 001 and 002), and each load contains 600 records. These two
loads will be imported into, for example, tablet 001. The third stream load
will continue to import 600 records, which will be written to tablet 002.
### usage
- schema
```sql
CREATE TABLE IF NOT EXISTS test.test_size_based_tablet_switch (
`k1` date NULL,
`k2` text NULL,
`k3` char(50) NULL,
`k4` varchar(200) NULL,
`k5` int(11) NULL
) ENGINE=OLAP
DUPLICATE KEY(`k1`)
COMMENT 'OLAP'
DISTRIBUTED BY RANDOM BUCKETS 2
PROPERTIES (
"replication_allocation" = "tag.location.default: 1"
);
```
- `curl --location-trusted -u admin:'' -H "format: json" -H
"read_json_by_line: true" -H "random_tablet_switching_threshold: 1000" -T
/data/lage.json
http://127.0.0.1:8030/api/test/test_size_based_tablet_switch/_stream_load`
### illustrate
#### Write 600 records to the test_size_based_tablet_switch table three
times. The first and second writes are written to tablet001, and the third
write is written to tablet002.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] 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:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### 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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