public long getEmitDelay() {
        return emitDelay;
    }
The metric indicates delay from data generation to leaving the source operator.

<p>Note: the metric is available during the binlog phase. Use 0 to indicate the metric is
unavailable.
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/postgres-cdc/src/main/java/org/apache/inlong/sort/postgre/DebeziumChangeFetcher.java