@Override
    public void notifyCheckpointComplete(long checkpointId) {
        // we have waited for at-least one complete checkpoint after all snapshot-splits are
        // finished, then we can mark snapshot assigner as finished.
        if (checkpointIdToFinish != null
                && !isAssigningFinished(assignerStatus)
                && allSplitsFinished()) {
            if (checkpointId >= checkpointIdToFinish) {
                assignerStatus = assignerStatus.onFinish();
            }
            LOG.info("Snapshot split assigner is turn into finished status.");
        }
    }
A {@link MySqlSplitAssigner} that splits tables into small chunk splits based on primary key
range and chunk size.

@see MySqlSourceOptions#SCAN_INCREMENTAL_SNAPSHOT_CHUNK_SIZE
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/mysql-cdc/src/main/java/org/apache/inlong/sort/cdc/mysql/source/assigners/MySqlSnapshotSplitAssigner.java