common/src/main/java/org/apache/comet/parquet/BatchReader.java [186:197]:
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  public BatchReader(AbstractColumnReader[] columnReaders) {
    // Todo: set useDecimal128 and useLazyMaterialization
    int numColumns = columnReaders.length;
    this.columnReaders = new AbstractColumnReader[numColumns];
    vectors = new CometVector[numColumns];
    currentBatch = new ColumnarBatch(vectors);
    // This constructor is used by Iceberg only. The columnReaders are
    // initialized in Iceberg, so no need to call the init()
    isInitialized = true;
    this.taskContext = TaskContext$.MODULE$.get();
    this.metrics = new HashMap<>();
  }
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common/src/main/java/org/apache/comet/parquet/NativeBatchReader.java [183:194]:
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  public NativeBatchReader(AbstractColumnReader[] columnReaders) {
    // Todo: set useDecimal128 and useLazyMaterialization
    int numColumns = columnReaders.length;
    this.columnReaders = new AbstractColumnReader[numColumns];
    vectors = new CometVector[numColumns];
    currentBatch = new ColumnarBatch(vectors);
    // This constructor is used by Iceberg only. The columnReaders are
    // initialized in Iceberg, so no need to call the init()
    isInitialized = true;
    this.taskContext = TaskContext$.MODULE$.get();
    this.metrics = new HashMap<>();
  }
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