wuwenchi opened a new issue, #4562:
URL: https://github.com/apache/iceberg/issues/4562
A iceberg table which doesn't have primary key, it supports alter table's
properties.
A iceberg table which has primary key, it will cause
`UnsupportedOperationException: Altering schema is not supported yet` ...
```
Flink SQL> create table nopk(id int);
[INFO] Execute statement succeed.
Flink SQL> alter table nopk set ('ab'='cd');
[INFO] Execute statement succeed.
Flink SQL> create table withpk(id int, primary key (id) not enforced);
[INFO] Execute statement succeed.
Flink SQL> alter table withpk set ('ab'='cd');
[ERROR] Could not execute SQL statement. Reason:
java.lang.UnsupportedOperationException: Altering schema is not supported
yet.
```
#4561
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