protected StructLike partition() {
    ContentFile<?>[] dataFiles = input.allFiles();
    return dataFiles[0].partition();
  }
An abstract OptimizingExecutor implementation that rewrites the rewrittenDataFiles in
RewriteInput and generates new position delete for rePosDeletedDataFiles.
amoro-format-iceberg/src/main/java/org/apache/amoro/optimizing/AbstractRewriteFilesExecutor.java