[FLINK-36697] Quickly evolving schema change in Doris fails

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: cdc-3.2.0
• Component/s: Flink CDC
• Assignee: yux
• Reporter: yux
• Created: 13/Nov/24 01:36
• Updated: 15/Nov/24 13:24

Description

Unlike StarRocks, Doris metadata applier doesn't check if state is finished. So if we're executing schema changes consecutively, Doris connector will complain with:

• <TABLE>'s state(SCHEMA_CHANGE) is not NORMAL. Do not allow doing ALTER ops

this exception. Adding loopcheck and ensures table state to be NORMAL before returning should help.