bw-chuxin opened a new issue, #6722:
URL: https://github.com/apache/gravitino/issues/6722
### What would you like to be improved?
When creating a table on Doris, if the parameter "replication_num" is not
set, the system will report the following error:
```shell
Failed to get the number of backend servers.
```
The reason for the error is that if the "replication_num" parameter is not
set, the system will query the number of BEs through the following statement:
```sql
select count(*) from information_schema.backends where Alive = 'true'
```
but the table information_schema.backends does not exist in Doris 2.1 version
### How should we improve?
1. When creates a table Doris directly, the "replication_num" parameter is
not a required parameter. so Is it necessary to perform validation?
2. If validation is indeed necessary, can the number of BEs be obtained
through "show backends" or other methods compatible with various versions?
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