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org.apache.spark.sql.rapids.execution

GpuBroadcastHelper

object GpuBroadcastHelper

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  1. final def !=(arg0: Any): Boolean
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  5. def asRDD(sc: SparkContext, broadcast: Broadcast[Any]): RDD[ColumnarBatch]

    Given a broadcast relation return an RDD of that relation.

    Given a broadcast relation return an RDD of that relation.

    Note

    This can only be called from driver code.

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  10. def getBroadcastBatch(broadcastRelation: Broadcast[Any], broadcastSchema: StructType): ColumnarBatch

    Given a broadcast relation get a ColumnarBatch that can be used on the GPU.

    Given a broadcast relation get a ColumnarBatch that can be used on the GPU.

    The broadcast relation may or may not contain any data, so we special case the empty relation case (hash or identity depending on the type of join).

    If a broadcast result is unexpected we throw, but at this moment other cases are not known, so this is a defensive measure.

    broadcastRelation

    - the broadcast as produced by a broadcast exchange

    broadcastSchema

    - the broadcast schema

    returns

    a ColumnarBatch or throw if the broadcast can't be handled

  11. def getBroadcastBatchNumRows(broadcastRelation: Broadcast[Any]): Int

    Given a broadcast relation get the number of rows that the received batch contains

    Given a broadcast relation get the number of rows that the received batch contains

    The broadcast relation may or may not contain any data, so we special case the empty relation case (hash or identity depending on the type of join).

    If a broadcast result is unexpected we throw, but at this moment other cases are not known, so this is a defensive measure.

    broadcastRelation

    - the broadcast as produced by a broadcast exchange

    returns

    number of rows for a batch received, or 0 if it's an empty relation

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