org.apache.flink.runtime.operators.resettable

类 SpillingResettableMutableObjectIterator<T>

java.lang.Object

org.apache.flink.runtime.operators.resettable.SpillingResettableMutableObjectIterator<T>

类型参数:

T - The type of record that the iterator handles.

所有已实现的接口:

ResettableMutableObjectIterator<T>, org.apache.flink.util.MutableObjectIterator<T>

public class SpillingResettableMutableObjectIterator<T>
extends Object
implements ResettableMutableObjectIterator<T>

Implementation of a resettable iterator. While iterating the first time over the data, the iterator writes the records to a spillable buffer. Any subsequent iteration re-reads the data from that buffer.

字段概要

字段

限定符和类型	字段和说明
protected SpillingBuffer	buffer
protected org.apache.flink.util.MutableObjectIterator<T>	input
protected org.apache.flink.core.memory.DataInputView	inView
protected MemoryManager	memoryManager
protected org.apache.flink.api.common.typeutils.TypeSerializer<T>	serializer

构造器概要

构造器

构造器和说明
SpillingResettableMutableObjectIterator(org.apache.flink.util.MutableObjectIterator<T> input, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, MemoryManager memoryManager, IOManager ioManager, int numPages, AbstractInvokable parentTask)
SpillingResettableMutableObjectIterator(org.apache.flink.util.MutableObjectIterator<T> input, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, MemoryManager memoryManager, IOManager ioManager, List<org.apache.flink.core.memory.MemorySegment> memory)

方法概要

限定符和类型	方法和说明
List<org.apache.flink.core.memory.MemorySegment>	close()
void	consumeAndCacheRemainingData()
T	next()
T	next(T reuse)
void	open()
void	reset() Resets the iterator.

从类继承的方法 java.lang.Object

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

字段详细资料

inView

protected org.apache.flink.core.memory.DataInputView inView

serializer

protected final org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer

buffer

protected final SpillingBuffer buffer

input

protected final org.apache.flink.util.MutableObjectIterator<T> input

memoryManager

protected final MemoryManager memoryManager

构造器详细资料

SpillingResettableMutableObjectIterator

public SpillingResettableMutableObjectIterator(org.apache.flink.util.MutableObjectIterator<T> input,
                                               org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                                               MemoryManager memoryManager,
                                               IOManager ioManager,
                                               int numPages,
                                               AbstractInvokable parentTask)
                                        throws MemoryAllocationException

抛出:

MemoryAllocationException

SpillingResettableMutableObjectIterator

public SpillingResettableMutableObjectIterator(org.apache.flink.util.MutableObjectIterator<T> input,
                                               org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                                               MemoryManager memoryManager,
                                               IOManager ioManager,
                                               List<org.apache.flink.core.memory.MemorySegment> memory)

方法详细资料

open

public void open()

reset

public void reset()
           throws IOException

从接口复制的说明: ResettableMutableObjectIterator

Resets the iterator.

指定者:

reset 在接口中 ResettableMutableObjectIterator<T>

抛出:

IOException - May be thrown when the serialization into buffers or the spilling to secondary storage fails.

close

public List<org.apache.flink.core.memory.MemorySegment> close()
                                                       throws IOException

抛出:

IOException

next

public T next(T reuse)
       throws IOException

指定者:

next 在接口中 org.apache.flink.util.MutableObjectIterator<T>

抛出:

IOException

next

public T next()
       throws IOException

指定者:

next 在接口中 org.apache.flink.util.MutableObjectIterator<T>

抛出:

IOException

consumeAndCacheRemainingData

public void consumeAndCacheRemainingData()
                                  throws IOException

抛出:

IOException