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com.nvidia.spark.rapids.shuffle

RapidsShuffleRequestHandler

trait RapidsShuffleRequestHandler extends AnyRef

Trait used for the server to get buffer metadata (for metadata requests), and also to acquire a buffer (for transfer requests)

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  1. abstract def acquireShuffleBuffer(tableId: Int): RapidsBuffer

    Acquires (locks w.r.t.

    Acquires (locks w.r.t. the memory tier) a RapidsBuffer corresponding to a table id.

    tableId

    the unique id for a table in the catalog

    returns

    a RapidsBuffer which is reference counted, and should be closed by the acquirer

  2. abstract def getShuffleBufferMetas(shuffleBlockBatchId: ShuffleBlockBatchId): Seq[TableMeta]

    This is a query into the manager to get the TableMeta corresponding to a shuffle block.

    This is a query into the manager to get the TableMeta corresponding to a shuffle block.

    shuffleBlockBatchId

    ShuffleBlockBatchId with (shuffleId, mapId, startReduceId, endReduceId)

    returns

    a sequence of TableMeta describing batches corresponding to a block.

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