ChannelSelectorRecordWriter (Flink : Runtime 2.1.0 API)

java.lang.Object
- org.apache.flink.runtime.io.network.api.writer.RecordWriter<T>
- - org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter<T>

Type Parameters:

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

All Implemented Interfaces:

AvailabilityProvider
```
public final class ChannelSelectorRecordWriter<T extends org.apache.flink.core.io.IOReadableWritable>
extends RecordWriter<T>
```
A regular record-oriented runtime result writer.
The ChannelSelectorRecordWriter extends the RecordWriter and emits records to the channel selected by the ChannelSelector 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

All Methods Instance Methods Concrete Methods
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.
`ChannelSelector<T>`	`getChannelSelector()`

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 Detail
  - 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
  - getChannelSelector
```
@VisibleForTesting
public ChannelSelector<T> getChannelSelector()
```