Package org.apache.flink.runtime.io.network.api.writer

Class BroadcastRecordWriter<T extends org.apache.flink.core.io.IOReadableWritable>

java.lang.Object

org.apache.flink.runtime.io.network.api.writer.RecordWriter<T>

org.apache.flink.runtime.io.network.api.writer.BroadcastRecordWriter<T>

Type Parameters:

T - the type of the record that can be emitted with this record writer

All Implemented Interfaces:

AvailabilityProvider

public final class BroadcastRecordWriter<T extends org.apache.flink.core.io.IOReadableWritable>
extends RecordWriter<T>

A special record-oriented runtime result writer only for broadcast mode.

The BroadcastRecordWriter extends the RecordWriter and emits records to all channels for regular emit(IOReadableWritable).

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.io.AvailabilityProvider

AvailabilityProvider.AvailabilityHelper

Field Summary

Fields inherited from class org.apache.flink.runtime.io.network.api.writer.RecordWriter

DEFAULT_OUTPUT_FLUSH_THREAD_NAME, flushAlways, numberOfSubpartitions, rng, serializer, targetPartition

Fields inherited from interface org.apache.flink.runtime.io.AvailabilityProvider

AVAILABLE

Method Summary

Modifier and Type	Method	Description
void	broadcastEmit(T record)	This is used to broadcast streaming Watermarks in-band with records.
void	emit(T record)	This is used to send regular records.

Methods inherited from class org.apache.flink.runtime.io.network.api.writer.RecordWriter

abortCheckpoint, alignedBarrierTimeout, broadcastEvent, broadcastEvent, checkErroneous, close, emit, emit, flushAll, getAvailableFuture, getNumberOfSubpartitions, isSubpartitionDerivable, randomEmit, serializeRecord, setMaxOverdraftBuffersPerGate, setMetricGroup

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.runtime.io.AvailabilityProvider

isApproximatelyAvailable, isAvailable

Method Details

emit

public void emit(T record)
          throws IOException

Description copied from class: RecordWriter

This is used to send regular records.

Specified by:

emit in class RecordWriter<T extends org.apache.flink.core.io.IOReadableWritable>

Throws:

IOException

broadcastEmit

public void broadcastEmit(T record)
                   throws IOException

Description copied from class: RecordWriter

This is used to broadcast streaming Watermarks in-band with records.

Specified by:

broadcastEmit in class RecordWriter<T extends org.apache.flink.core.io.IOReadableWritable>

Throws:

IOException