cc13ny commented on a change in pull request #17870:
URL: https://github.com/apache/flink/pull/17870#discussion_r756367504
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File path:
flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/streaming/connectors/kafka/table/SinkBufferFlushMode.java
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@@ -18,10 +18,11 @@
package org.apache.flink.streaming.connectors.kafka.table;
+import java.io.Serializable;
import java.util.Objects;
/** Sink buffer flush configuration. */
-public class SinkBufferFlushMode {
+public class SinkBufferFlushMode implements Serializable {
Review comment:
I don't get it why we need to make it Serializable here?
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