yuxiqian commented on code in PR #3339:
URL: https://github.com/apache/flink-cdc/pull/3339#discussion_r1688986645
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flink-cdc-common/src/main/java/org/apache/flink/cdc/common/sink/MetadataApplier.java:
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@@ -19,13 +19,22 @@
import org.apache.flink.cdc.common.annotation.PublicEvolving;
import org.apache.flink.cdc.common.event.SchemaChangeEvent;
+import org.apache.flink.cdc.common.event.SchemaChangeEventType;
+import org.apache.flink.cdc.common.exceptions.SchemaEvolveException;
import java.io.Serializable;
+import java.util.Set;
/** {@code MetadataApplier} is used to apply metadata changes to external
systems. */
@PublicEvolving
public interface MetadataApplier extends Serializable {
+ /** Checks if this metadata applier should handle this event type. */
+ boolean acceptsSchemaEvolutionType(SchemaChangeEventType
schemaChangeEventType);
+
+ /** Checks what kind of schema change events downstream can handle. */
+ Set<SchemaChangeEventType> getSupportedSchemaEvolutionTypes();
+
Review Comment:
I've tried to add reasonable `default` implementations for new methods to
break less downstream code.
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