@Override
    public void addSplitsBack(List<MySqlSplit> splits, int subtaskId) {
        LOG.debug("MySQL Source Enumerator adds splits back: {}", splits);
        splitAssigner.addSplits(splits);
    }
A MySQL CDC source enumerator that enumerates receive the split request and assign the split to
source readers.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/enumerator/MySqlSourceEnumerator.java