The caller of the model's _getRowInfo, _getColumnInfo, _setRowInfo, or _setColumnInfo method is responsible for creating the instance of the Row/Column Data Vector passed as an argument to these ...

The row or column indicates to which row or column this row/column data vector refers. Each row/column data vector deals only with one row or column at a time. If this row/column data vector is used ...

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A record batch comprises of column vector (s) (Arrow data structure for columnar representation) with a fixed number of records. Record batch is the unit of work inside Dremio’s execution engine.