columnar::TestUtils::ColumnReaderMetNames< Reader > Node1 columnar::TestUtils ::ColumnReaderMetNames < Reader > + branchReader + offsets + columnData + columnHashData + benchmarkUnpack + benchmark + ColumnReaderMetNames() + connect() + clearColumns() + getEntry() + setData() + getPerfData() + collectColumnData() Node2 columnar::TestUtils ::ColumnReader + outputColumns + ~ColumnReader() + connect() + connectColumnIndices() + clearColumns() + getEntry() + setData() + getPerfData() + collectColumnData() Node2->Node1