trait KeyGroupedPartitionedScan[T] extends AnyRef
Base trait for a data source scan capable of producing a key-grouped output.
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- def getInputPartitionGrouping(p: KeyGroupedPartitioning, spjParams: StoragePartitionJoinParams, filteredPartitions: Seq[Seq[T]], partitionValueAccessor: (T) => InternalRow): Seq[Seq[T]]
Re-groups the input partitions for this scan based on the provided SPJ params, returning a list of partitions to be scanned by each scan task.
Re-groups the input partitions for this scan based on the provided SPJ params, returning a list of partitions to be scanned by each scan task.
- p
The output KeyGroupedPartitioning of this scan.
- spjParams
SPJ parameters for the scan.
- filteredPartitions
The input partitions (after applying filtering) to be re-grouped for this scan, initially grouped by partition value.
- partitionValueAccessor
Accessor for the partition values (as an InternalRow)
- def getOutputKeyGroupedPartitioning(basePartitioning: KeyGroupedPartitioning, spjParams: StoragePartitionJoinParams): KeyGroupedPartitioning
The output partitioning of this scan after applying any pushed-down SPJ parameters.
The output partitioning of this scan after applying any pushed-down SPJ parameters.
- basePartitioning
The original key-grouped partitioning of the scan.
- spjParams
SPJ parameters for the scan.
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(Since version 9)