@Override
  public void addSplitsBack(List<MixedFormatSplit> splits, int subtaskId) {
    LOG.info("addSplitsBack from subtaskId {}, splits {}.", subtaskId, splits);
    assigner.onUnassignedSplits(splits);
  }
The abstract mixed-format source enumerator.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/read/hybrid/enumerator/AbstractMixedFormatEnumerator.java