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.