columnar::PhysliteTestHelpers::ColumnDataSplitLink Node1 columnar::PhysliteTestHelpers ::ColumnDataSplitLink + columnName + branchBaseName + offsetName + sizeColumn + targetSizeColumn + offsets + dataCopy + mainBranch + indexBranch + indexLeaf + benchmarkUnpack + benchmark + ColumnDataSplitLink() + connect() + getSize() + setData() Node2 columnar::PhysliteTestHelpers ::IColumnData + ~IColumnData() + connect() + getSize() + setData() Node2->Node1