doris-sink: panic when insert decimal array data

[xuefengze]

thread 'rw-streaming' panicked at src/connector/src/sink/encoder/json.rs:252:51:
called `Option::unwrap()` on a `None` value

in doris:

CREATE table doris_types(
    types_id int,
    c_decimal ARRAY<decimal>,
) UNIQUE KEY(`types_id`)
DISTRIBUTED BY HASH(`types_id`) BUCKETS 1
PROPERTIES (
    "replication_allocation" = "tag.location.default: 1"
);

it seems that the c_decimal's type is ARRAY, so the get_decimal_pre_scale func return None.

risingwave/src/connector/src/sink/doris.rs

Lines 498 to 507 in 436884a

	pub fn get_decimal_pre_scale(&self) -> Option<(u8, u8)> {
	if self.r#type.contains("DECIMAL") {
	let a = self.precision.clone().unwrap().parse::<u8>().unwrap();
	let b = self.scale.clone().unwrap().parse::<u8>().unwrap();
	Some((a, b))
	} else {
	None
	}
	}
	}

[xuefengze]

cc. @xxhZs

[github-actions]

This issue has been open for 60 days with no activity. Could you please update the status? Feel free to continue discussion or close as not planned.

[hzxa21]

@xxhZs Is the issue fixed?

[xxhZs]

The reason is that the array of the schema for the http port of doris doesn't have information about the internal type, we can use the mysql port to get the schema, but there will be compatibility issues, so it may still need to be fixed by them, an issue has been raised for them
apache/doris#41693