object ConcatAndConsumeAll
Consumes an Iterator of ColumnarBatches and concatenates them into a single ColumnarBatch. The batches will be closed when this operation is done.
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def
buildNonEmptyBatch(arrayOfBatches: Array[ColumnarBatch], schema: StructType): ColumnarBatch
Build a single batch from the batches collected so far.
Build a single batch from the batches collected so far. If array is empty this will likely blow up.
- arrayOfBatches
the batches to concat. This will be consumed and you do not need to close any of the batches after this is called.
- schema
the schema of the output types.
- returns
a single batch with all of them concated together.
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def
buildNonEmptyBatchFromTypes(arrayOfBatches: Array[ColumnarBatch], dataTypes: Array[DataType]): ColumnarBatch
Build a single batch from the batches collected so far.
Build a single batch from the batches collected so far. If array is empty this will likely blow up.
- arrayOfBatches
the batches to concat. This will be consumed and you do not need to close any of the batches after this is called.
- dataTypes
the output types.
- returns
a single batch with all of them concated together.
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def
getSingleBatchWithVerification(batches: Iterator[ColumnarBatch], format: Seq[Attribute]): ColumnarBatch
Verify that a single batch was returned from the iterator, or if it is empty return an empty batch.
Verify that a single batch was returned from the iterator, or if it is empty return an empty batch.
- batches
batches to be consumed.
- format
the format of the batches in case we need to return an empty batch. Typically this is the output of your exec.
- returns
the single batch or an empty batch if needed. Please be careful that your exec does not return empty batches as part of an RDD.
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