public JdbcSourceConfigFactory chunkKeyColumn(String chunkKeyColumn) {
        this.chunkKeyColumn = chunkKeyColumn;
        return this;
    }
The chunk key of table snapshot, captured tables are split into multiple chunks by the chunk
key column when read the snapshot of table.
inlong-sort/sort-flink/cdc-base/src/main/java/org/apache/inlong/sort/cdc/base/config/JdbcSourceConfigFactory.java