type enum default value is ignored when mount the event

[3AceShowHand]

What did you do?

create table t(a int primary key, state enum ("created", "working", "finished", "error") collate utf8mb4_general_ci not null default "created");
insert into t values (1, "working");

What did you expect to see?

No response

What did you see instead?

when drop the column state and insert new data at the delete-only phase, use old schema to parse the raw value, "created" should be used as the default value to fill the column.

Versions of the cluster

Upstream TiDB cluster version (execute SELECT tidb_version(); in a MySQL client):

(paste TiDB cluster version here)

Upstream TiKV version (execute tikv-server --version):

(paste TiKV version here)

TiCDC version (execute cdc version):

(paste TiCDC version here)

[3AceShowHand]

[2023/06/19 11:47:47.378 +08:00] [INFO] [mounter.go:365] ["datum2Column, inspect colult vmn info"] [colInfo="{\"id\":2,\"name\":{\"O\":\"state\",\"L\":\"state\"},\"offset\":1,\"origin_default\":null,\"origin_default_bit\":null,\"default\":\"created\",\"default_bit\":null,\"default_is_expr\":false,\"generated_expr_string\":\"\",\"generated_stored\":false,\"dependences\":null,\"type\":{\"Tp\":247,\"Flag\":1,\"Flen\":8,\"Decimal\":0,\"Charset\":\"utf8mb4\",\"Collate\":\"utf8mb4_general_ci\",\"Elems\":[\"created\",\"working\",\"finished\",\"error\"],\"ElemsIsBinaryLit\":null,\"Array\":false},\"state\":5,\"comment\":\"\",\"hidden\":false,\"change_state_info\":null,\"version\":2}"]

"created" is set as the default value field in the column info, but no used.

[fubinzh]

/severity moderate

[nongfushanquan]

/label affects-6.1

[nongfushanquan]

/label affects-6.5
/label affects-7.1