@Override
    public void handleSplitsChanges(SplitsChange<MySqlSplit> splitsChanges) {
        if (!(splitsChanges instanceof SplitsAddition)) {
            throw new UnsupportedOperationException(
                    String.format(
                            "The SplitChange type of %s is not supported.",
                            splitsChanges.getClass()));
        }

        LOG.debug("Handling split change {}", splitsChanges);
        splits.addAll(splitsChanges.splits());
    }
The {@link SplitReader} implementation for the {@link MySqlSource}.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/reader/MySqlSplitReader.java