feat(sink): support columns subset for cassandra and doris sink

java/connector-node/risingwave-sink-cassandra/src/main/java/com/risingwave/connector/CassandraUtil.java

@@ -79,9 +79,10 @@ private static int getCorrespondingCassandraType(DataType dataType) {
     public static void checkSchema(
             List<ColumnDesc> columnDescs,
             Map<CqlIdentifier, ColumnMetadata> cassandraColumnDescMap) {
-        if (columnDescs.size() != cassandraColumnDescMap.size()) {
+        if (columnDescs.size() > cassandraColumnDescMap.size()) {
             throw Status.FAILED_PRECONDITION
-                    .withDescription("Don't match in the number of columns in the table")
+                    .withDescription(
+                            "The columns of the sink must be equal to or a superset of the target table's columns.")
                     .asRuntimeException();
         }
         for (ColumnDesc columnDesc : columnDescs) {

src/connector/src/sink/clickhouse.rs

@@ -261,7 +261,7 @@ impl ClickHouseSink {
             .collect();
 
         if rw_fields_name.len().gt(&clickhouse_columns_desc.len()) {
-            return Err(SinkError::ClickHouse("The nums of the RisingWave column must be greater than/equal to the length of the Clickhouse column".to_string()));
+            return Err(SinkError::ClickHouse("The columns of the sink must be equal to or a superset of the target table's columns.".to_string()));
         }
 
         for i in rw_fields_name {

src/connector/src/sink/doris.rs

@@ -54,6 +54,8 @@ pub struct DorisCommon {
     pub database: String,
     #[serde(rename = "doris.table")]
     pub table: String,
+    #[serde(rename = "doris.partial_columns")]
+    pub partial_columns: Option<String>,
 }
 
 impl DorisCommon {
@@ -125,8 +127,11 @@ impl DorisSink {
             .collect();
 
         let rw_fields_name = self.schema.fields();
-        if rw_fields_name.len().ne(&doris_columns_desc.len()) {
-            return Err(SinkError::Doris("The length of the RisingWave column must be equal to the length of the doris column".to_string()));
+        if rw_fields_name.len().gt(&doris_columns_desc.len()) {
+            return Err(SinkError::Doris(
+                "The columns of the sink must be equal to or a superset of the target table's columns."
+                    .to_string(),
+            ));
         }
 
         for i in rw_fields_name {
@@ -271,6 +276,7 @@ impl DorisSinkWriter {
             .add_common_header()
             .set_user_password(config.common.user.clone(), config.common.password.clone())
             .add_json_format()
+            .set_partial_columns(config.common.partial_columns.clone())
             .add_read_json_by_line();
         let header = if !is_append_only {
             header_builder.add_hidden_column().build()

src/connector/src/sink/doris_starrocks_connector.rs

@@ -143,6 +143,7 @@ impl HeaderBuilder {
         self
     }
 
+    /// Only use in Starrocks
     pub fn set_partial_update(mut self, partial_update: Option<String>) -> Self {
         self.header.insert(
             "partial_update".to_string(),
@@ -151,6 +152,15 @@ impl HeaderBuilder {
         self
     }
 
+    /// Only use in Doris
+    pub fn set_partial_columns(mut self, partial_columns: Option<String>) -> Self {
+        self.header.insert(
+            "partial_columns".to_string(),
+            partial_columns.unwrap_or_else(|| "false".to_string()),
+        );
+        self
+    }
+
     pub fn build(self) -> HashMap<String, String> {
         self.header
     }

src/connector/src/sink/starrocks.rs

@@ -128,7 +128,7 @@ impl StarrocksSink {
     ) -> Result<()> {
         let rw_fields_name = self.schema.fields();
         if rw_fields_name.len() > starrocks_columns_desc.len() {
-            return Err(SinkError::Starrocks("The length of the RisingWave column must be equal or less to the length of the starrocks column".to_string()));
+            return Err(SinkError::Starrocks("The columns of the sink must be equal to or a superset of the target table's columns.".to_string()));
         }
 
         for i in rw_fields_name {

src/connector/with_options_sink.yaml

@@ -127,6 +127,9 @@ DorisConfig:
   - name: doris.table
     field_type: String
     required: true
+  - name: doris.partial_columns
+    field_type: String
+    required: false
   - name: r#type
     field_type: String
     required: true