@VisibleForTesting
  public Map<Integer, String> getReadersAwaitingSplit() {
    return readersAwaitingSplit;
  }
return true if enumerator should wait for splits like in the continuous enumerator case.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/read/hybrid/enumerator/AbstractMixedFormatEnumerator.java