englefly opened a new issue #8073: URL: https://github.com/apache/incubator-doris/issues/8073
### 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 branch-0.14 branch-0.15 df2c7563b08e94801daeb4370a1627886dbc3d34 ### What's Wrong? after alter schema, changing bigint column to string (release 0.14) or varchar (release 0.15), be is down. ### What You Expected? safely alter schema: `alter table table_1 modify column b varchar(1);` ### How to Reproduce? 1. create a table `table_1` ``` CREATE TABLE `table_1` ( `a` bigint(20) NULL COMMENT "主键", `b` int(11) NULL COMMENT "", ENGINE=OLAP UNIQUE KEY(`a`) COMMENT "" DISTRIBUTED BY HASH(`a`) BUCKETS 8 PROPERTIES ( "replication_num" = "1", "in_memory" = "false", "storage_format" = "V2" ); ``` 2. load data into `table_1` ( 10000 tuples) 3. `alter table table_1 modify column b varchar(1);` 4. be crashed. ### Anything Else? with a few tuples, eg. 10 tuples, after alter schema, be still alive, but results of `select * from table_1` are messed. ### 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) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
