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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/07/26 01:47:41 UTC
[GitHub] [doris] ChPi opened a new issue, #11191: [Bug] (alter)alter unique table schema bug
ChPi opened a new issue, #11191:
URL: https://github.com/apache/doris/issues/11191
### Search before asking
- [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues.
### Version
1.1
### What's Wrong?
alter schema job is failed.
be log
```
I0725 11:16:24.719820 24073 task_worker_pool.cpp:483] get alter table task, signature: 1348500
I0725 11:16:24.719913 24073 schema_change.cpp:1407] begin to do request alter tablet: base_tablet_id=1348495, base_schema_hash=1918244580, new_tablet_id=13485
00, new_schema_hash=571505762, alter_version=2
I0725 11:16:24.719944 24073 schema_change.cpp:1462] finish to validate alter tablet request. begin to convert data from base tablet to new tablet base_tablet=
1348495.1918244580.c343975d68b9af29-b45b0de30b633094 new_tablet=1348500.571505762.994643e77c9a4da6-4e3e19dc01bbb2ab
I0725 11:16:24.720063 24073 schema_change.cpp:1532] begin to remove all data from new tablet to prevent rewrite. new_tablet=1348500.571505762.994643e77c9a4da6
-4e3e19dc01bbb2ab
I0725 11:16:24.781093 24073 schema_change.cpp:1841] begin to convert historical rowsets for new_tablet from base_tablet. base_tablet=1348495.1918244580.c34397
5d68b9af29-b45b0de30b633094, new_tablet=1348500.571505762.994643e77c9a4da6-4e3e19dc01bbb2ab
I0725 11:16:24.781180 24073 schema_change.cpp:1877] doing schema change directly for base_tablet 1348495.1918244580.c343975d68b9af29-b45b0de30b633094
W0725 11:16:28.401537 24073 schema_change.cpp:1088] fail to check row num! source_rows=1000000, merged_rows=0, filtered_rows=0, new_index_rows=726592
I0725 11:16:28.401716 24073 schema_change.cpp:1096] all row nums. source_rows=1000000, merged_rows=0, filtered_rows=0, new_index_rows=726592
W0725 11:16:28.401744 24073 schema_change.cpp:1933] failed to process the version. version=2-2
```
https://github.com/apache/doris/blob/2dbd70bf92ed8944d60f38cb43ef556feb73b41d/be/src/olap/schema_change.cpp#L1752
it should be added that the code `reader_context.merged_rows = &_merged_rows;`，but I'm not very sure。
### What You Expected?
alter schema job is successful.
### How to Reproduce?
insert duplicate rows into a unique table. then alter table, it will be failed.
### Anything Else?
_No response_
### Are you willing to submit PR?
- [X] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)
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