private void reportMetric(String database, String table, int len) {
        if (metricData != null) {
            metricData.outputMetrics(database, table, 1, len);
        }
    }
Process schema change for Doris

@param data The origin data
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/doris/src/main/java/org/apache/inlong/sort/doris/schema/SchemaChangeHelper.java