Uses full table name as a lock key during the failover procedure.

[WenyXu]

What type of enhancement is this?

Tech debt reduction

What does the enhancement do?

We should use the full table name as a lock key like we did in other procedures(e.g., here)

greptimedb/src/meta-srv/src/procedure/region_failover.rs

Lines 378 to 385 in 8f3b299

	fn lock_key(&self) -> LockKey {
	let region_ident = &self.node.failed_region;
	let region_key = format!(
	"{}/region-{}",
	region_ident.table_id, region_ident.region_number
	);
	LockKey::single(region_key)
	}

The lock was removed accidentally in #2368

Implementation challenges

No response

[Dysprosium0626]

It seems like an easy task and good start for beginner like me.
Can you assign this to me?

[WenyXu]

It seems like an easy task and good start for beginner like me. Can you assign this to me?

Sorry, this issue might need some future discussion; how about looking for other good first issues? Thank you 😊