org.apache.flink.runtime.io.network.partition.hybrid.tiered.storage

Interface BufferAccumulator

All Superinterfaces:

AutoCloseable

All Known Implementing Classes:

HashBufferAccumulator, SortBufferAccumulator

public interface BufferAccumulator
extends AutoCloseable

Accumulates received records into buffers. The BufferAccumulator receives the records from tiered store producer and the records will accumulate and transform into buffers.

Method Summary

Modifier and Type	Method and Description
void	close() Close the accumulator.
void	receive(ByteBuffer record, TieredStorageSubpartitionId subpartitionId, Buffer.DataType dataType, boolean isBroadcast) Receives the records from tiered store producer, these records will be accumulated and transformed into finished buffers.
void	setup(java.util.function.BiConsumer<TieredStorageSubpartitionId,List<Buffer>> bufferFlusher) Setup the accumulator.

Method Detail

setup

void setup(java.util.function.BiConsumer<TieredStorageSubpartitionId,List<Buffer>> bufferFlusher)

Setup the accumulator.

Parameters:

bufferFlusher - accepts the accumulated buffers. The first field is the subpartition id, while the list in the second field contains accumulated buffers in order for that subpartition.

receive

void receive(ByteBuffer record,
             TieredStorageSubpartitionId subpartitionId,
             Buffer.DataType dataType,
             boolean isBroadcast)
      throws IOException

Receives the records from tiered store producer, these records will be accumulated and transformed into finished buffers.

Note that when isBroadcast is true, for a broadcast-only partition, the subpartitionId value will always be 0. Conversely, for a non-broadcast-only partition, the subpartitionId value will range from 0 to the number of subpartitions.

Parameters:

record - the received record

subpartitionId - the subpartition id of the record

dataType - the data type of the record

isBroadcast - whether the record is a broadcast record

Throws:

IOException

close

void close()

Close the accumulator. This will flush all the remaining data and release all the resources.

Specified by:

close in interface AutoCloseable