public abstract class ColumnGroupPartitioner extends Object
| Constructor and Description | 
|---|
| ColumnGroupPartitioner() | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract List<int[]> | partitionColumns(List<Integer> groupCols,
                HashMap<Integer,PlanningCoCoder.GroupableColInfo> groupColsInfo,
                CompressionSettings cs)Partitions a list of columns into a list of partitions that contains subsets of columns. | 
public abstract List<int[]> partitionColumns(List<Integer> groupCols, HashMap<Integer,PlanningCoCoder.GroupableColInfo> groupColsInfo, CompressionSettings cs)
groupCols - list of columnsgroupColsInfo - list of column infoscs - The Compression settings used for the compressionCopyright © 2020 The Apache Software Foundation. All rights reserved.