Package org.apache.flink.streaming.runtime.watermarkstatus

Class StatusWatermarkValve.SubpartitionStatus

java.lang.Object

org.apache.flink.streaming.runtime.watermarkstatus.StatusWatermarkValve.SubpartitionStatus

All Implemented Interfaces:

HeapPriorityQueue.HeapPriorityQueueElement

Enclosing class:

StatusWatermarkValve

@VisibleForTesting
protected static class StatusWatermarkValve.SubpartitionStatus
extends Object
implements HeapPriorityQueue.HeapPriorityQueueElement

An SubpartitionStatus keeps track of a subpartition's last watermark, stream status, and whether or not the subpartition's current watermark is aligned with the overall watermark output from the valve.

There are 2 situations where a subpartition's watermark is not considered aligned:

• the current watermark status of the subpartition is idle
• the watermark status has resumed to be active, but the watermark of the subpartition hasn't caught up to the last output watermark from the valve yet.

NOTE: This class implements HeapPriorityQueue.HeapPriorityQueueElement to be managed by StatusWatermarkValve.alignedSubpartitionStatuses to help find minimum watermark.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	isWatermarkAligned
protected long	watermark
protected WatermarkStatus	watermarkStatus

Fields inherited from interface org.apache.flink.streaming.runtime.watermarkstatus.HeapPriorityQueue.HeapPriorityQueueElement

NOT_CONTAINED

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SubpartitionStatus()

Method Summary

Modifier and Type	Method	Description
int	getInternalIndex()	Returns the current index of this object in the internal array of HeapPriorityQueue.
void	setInternalIndex(int newIndex)	Sets the current index of this object in the HeapPriorityQueue and should only be called by the owning HeapPriorityQueue.

Methods inherited from class java.lang.Object

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

Field Details

watermark

protected long watermark

watermarkStatus

protected WatermarkStatus watermarkStatus

isWatermarkAligned

protected boolean isWatermarkAligned

Constructor Details

SubpartitionStatus

protected SubpartitionStatus()

Method Details

getInternalIndex

public int getInternalIndex()

Description copied from interface: HeapPriorityQueue.HeapPriorityQueueElement

Returns the current index of this object in the internal array of HeapPriorityQueue.

Specified by:

getInternalIndex in interface HeapPriorityQueue.HeapPriorityQueueElement

setInternalIndex

public void setInternalIndex(int newIndex)

Description copied from interface: HeapPriorityQueue.HeapPriorityQueueElement

Sets the current index of this object in the HeapPriorityQueue and should only be called by the owning HeapPriorityQueue.

Specified by:

setInternalIndex in interface HeapPriorityQueue.HeapPriorityQueueElement

Parameters:

newIndex - the new index in the timer heap.