public ByteBuffer[][] createAddedColVals(List<ByteBuffer> metadata) {
    return fileFormatProxy.getAddedValuesToCache(metadata);
  }
@return the values for the added columns returned by createAddedCols for respective metadatas.
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/FileMetadataHandler.java