StatusWatermarkValve.SubpartitionStatus (Flink : Runtime 2.0-preview1 API)

java.lang.Object
- org.apache.flink.streaming.runtime.watermarkstatus.StatusWatermarkValve.SubpartitionStatus

Enclosing class:

StatusWatermarkValve
```
@VisibleForTesting
protected static class StatusWatermarkValve.SubpartitionStatus
extends Object
```
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`
`static int`	`NOT_CONTAINED`	The index that indicates that a `HeapPriorityQueue.HeapPriorityQueueElement` object is not contained in and managed by any `HeapPriorityQueue`.
`protected long`	`watermark`
`protected WatermarkStatus`	`watermarkStatus`

Constructor Summary

Constructors
Modifier Constructor Description

protected SubpartitionStatus()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

int getInternalIndex()

void setInternalIndex(int newIndex)
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - watermark
```
protected long watermark
```
  - watermarkStatus
```
protected WatermarkStatus watermarkStatus
```
  - isWatermarkAligned
```
protected boolean isWatermarkAligned
```
  - NOT_CONTAINED
```
public static final int NOT_CONTAINED
```
    The index that indicates that a HeapPriorityQueue.HeapPriorityQueueElement object is not contained in and managed by any HeapPriorityQueue. We do not strictly enforce that internal indexes must be reset to this value when elements are removed from a HeapPriorityQueue.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - SubpartitionStatus
```
protected SubpartitionStatus()
```
- Method Detail
  - getInternalIndex
```
public int getInternalIndex()
```
  - setInternalIndex
```
public void setInternalIndex(int newIndex)
```