public Builder<T> planParallelism(int planParallelism) {
            readOptions.put(
                    FlinkConfigOptions.TABLE_EXEC_ICEBERG_WORKER_POOL_SIZE.key(),
                    Integer.toString(planParallelism));
            return this;
        }
Copy from iceberg-flink:iceberg-flink-1.15:1.3.1
inlong-sort/sort-flink/sort-flink-v1.15/sort-connectors/iceberg/src/main/java/org/apache/inlong/sort/iceberg/source/IcebergSource.java