restorestate - 腾讯云开发者社区

CounterSource是一个有状态的RichParallelSourceFunction，它实现了ListCheckpointed接口，snapshotState方法返回了当前的offset，而restoreState...recovery, or try recovering * from a different checkpoint. */ void restoreState...(List state) throws Exception; } ListCheckpointed定义了两个接口，一个是snapshotState方法，一个是restoreState方法 snapshotState...方法，方法有个checkpointId参数，是唯一单调递增的数字，而timestamp则是master触发checkpoint的时间戳，该方法要返回当前的state(List结构) restoreState...方法；snapshotState方法在master触发checkpoint的时候被调用，用户需要返回当前的状态，而restoreState方法会在failure recovery的时候被调用，传递的参数为

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Mongodb多键索引之数组

"works" : 5, "advanced" : 4, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState...5, "advanced" : 4, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState..."works" : 9, "advanced" : 7, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState...8, "advanced" : 7, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState...works" : 13, "advanced" : 5, "needTime" : 7, "needYield" : 0, "saveState" : 0, "restoreState

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重温设计模式 --- 备忘录模式

} public Memento SaveState() { return new Memento(state); } public void RestoreState...public void SaveState(Memento state) { mementoList.Add(state); } public Memento RestoreState...originator.State = "State 4"; Console.WriteLine("Current state: " + originator.State); // 恢复到之前的状态 originator.RestoreState...(caretaker.RestoreState(1)); Console.WriteLine("Restored state: " + originator.State); 输出结果： State set...当需要恢复之前的状态时，Caretaker通过调用RestoreState方法来获取Memento对象，并将其传递给Originator的RestoreState方法，从而将Originator恢复到之前的状态

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聊聊flink的ListCheckpointed

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Mongodb多键索引之数组文档

"works" : 2, "advanced" : 1, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState...2, "advanced" : 1, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState..."advanced" : 73446, "needTime" : 1026558, "needYield" : 0, "saveState" : 8593, "restoreState..."advanced" : 73443, "needTime" : 1026561, "needYield" : 0, "saveState" : 8593, "restoreState...73447, "advanced" : 73446, "needTime" : 0, "needYield" : 0, "saveState" : 573, "restoreState

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MongoDB 聚合怎么写，更复杂的聚合案例

opens: 1, closes: 1, saveState: 33, restoreState...opens: 1, closes: 1, saveState: 33, restoreState...opens: 1, closes: 1, saveState: 2, restoreState...opens: 1, closes: 1, saveState: 2, restoreState...opens: 1671, closes: 1, saveState: 2, restoreState

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Mongodb多键索引之嵌套文档

1000021, "advanced" : 1, "needTime" : 1000019, "needYield" : 0, "saveState" : 7812, "restoreState..."works" : 2, "advanced" : 1, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState...2, "advanced" : 1, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState..."works" : 1, "advanced" : 0, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState...1, "advanced" : 0, "needTime" : 0, "needYield" : 0, "saveState" : 0, "restoreState

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聊聊chronos的BackupDB

backuping = false; LOGGER.info("end backup"); } } public static RestoreState...RocksDBException { if (restoring) { LOGGER.info("is restoring, return"); return RestoreState.BEING_RESTORE...break; } } } return RestoreState.SUCCESS...LOGGER.error("error while restore, path:{}, err:{}", DB_PATH_RESTORE, e.getMessage(), e); return RestoreState.FAIL

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Flink – state管理

. */ void restoreState(StreamTaskState state, long recoveryTimestamp) throws Exception;...state StreamTaskState snapshotOperatorState(long checkpointId, long timestamp) throws Exception; void restoreState...} } return state; } @Override @SuppressWarnings("rawtypes,unchecked") public void restoreState...outStream.write(writeBuffer, 0, pos); pos = 0; } } } AbstractFsStateSnapshot.restoreState...@Override public KvState restoreState( FsStateBackend stateBackend,

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抽丝剥茧——备忘录设计模式

public Memento createMemento(){ return new InnerMemento(state); } public void restoreState...public Memento createMemento(){ return originator.createMemento(); } public void restoreState...(Memento memento){ originator.restoreState(memento); } } 「具体调用」 public static void main(String

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聊聊flink StreamOperator的initializeState方法

list.add(serializable); } try { listCheckpointedFun.restoreState...ListCheckpointed接口，而且是context.isRestored()为true，那么就会从OperatorStateStore获取ListState，将里头的值转换为List，调用ListCheckpointed.restoreState...ListCheckpointed接口，而且是context.isRestored()为true，那么就会从OperatorStateStore获取ListState，将里头的值转换为List，调用ListCheckpointed.restoreState

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MongoDB复合索引详解

advanced": 20853, "needTime": 7485, "needYield": 0, "saveState": 1387, "restoreState...28338, "needTime": 0, "needYield": 0, "saveState": 1387, "restoreState..."advanced": 0, "needTime": 20853, "needYield": 0, "saveState": 162, "restoreState...20853, "needTime": 0, "needYield": 0, "saveState": 162, "restoreState

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【Flutter 知识集锦】从 restorationId 来说临时状态存储

RestorableCounterState(); } 如下在 _RestorableCounterState 中进行操作：首先混入 RestorationMixin ，然后覆写 restorationId 和 restoreState...get restorationId => widget.restorationId; @override void restoreState(RestorationBucket?...同样覆写了 restoreState 和 restorationId 方法。这时再看 TextField 组件的实现也是类似，也就说明 TextField 组件也具有这种恢复状态的特性。

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巧用MongoDB部分索引优化性能问题

"saveState" : 10, "restoreState...needTime" : 523, "needYield" : 0, "saveState" : 10, "restoreState..."needYield" : 0, "saveState" : 10, "restoreState..."needYield" : 0, "saveState" : 10, "restoreState

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Flink1.4 如何使用状态

bufferedElements.add(element); } } } @Override public void restoreState...<- checkpointedState.get()) { bufferedElements += element } } } override def restoreState...还需要实现以下两种方法： List snapshotState(long checkpointId, long timestamp) throws Exception; void restoreState...(List state) throws Exception; snapshotState()方法应该返回一个对象列表来进行checkpoint，而restoreState()方法在恢复时必须处理这样一个列表...offset += 1 }) } } override def cancel(): Unit = isRunning = false override def restoreState

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Mongodb分页查询优化下

executionTimeMillisEstimate" : 0, "works" : 51, "advanced" : 50, "needTime" : 0, "needYield" : 0, "saveState" : 2, "restoreState...executionTimeMillisEstimate" : 0, "works" : 50, "advanced" : 50, "needTime" : 0, "needYield" : 0, "saveState" : 2, "restoreState...executionTimeMillisEstimate" : 0, "works" : 50, "advanced" : 50, "needTime" : 0, "needYield" : 0, "saveState" : 2, "restoreState

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聊聊flink StreamOperator的initializeState方法

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itext7知识点研究（PDF编辑）

ColorConstants.MAGENTA) //字体颜色 .showText("8 bit depth PNG") //具体展示的文字 .endText() .restoreState...BaseColor.YELLOW); canvas.rectangle(36, 786, 66, 16); canvas.fill(); canvas.restoreState

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MongoDB中null性能问题以及如何应对

: 0, "needTime" : 550001, "needYield" : 0, "saveState" : 550, "restoreState...needTime" : 1, "needYield" : 0, "saveState" : 550, "restoreState...0, "needTime" : 0, "needYield" : 0, "saveState" : 550, "restoreState...550000, "needTime" : 0, "needYield" : 0, "saveState" : 550, "restoreState

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QSplitter（分离部件）

Alternatively, you can save and restore the sizes of the widgets from a QByteArray using saveState() and restoreState...或者，您可以分别使用saveState()和restoreState()从QByteArray中保存和恢复小部件的大小。

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聊聊flink的ListCheckpointed

Mongodb多键索引之数组

重温设计模式 --- 备忘录模式

聊聊flink的ListCheckpointed

Mongodb多键索引之数组文档

MongoDB 聚合怎么写，更复杂的聚合案例

Mongodb多键索引之嵌套文档

聊聊chronos的BackupDB

Flink – state管理

抽丝剥茧——备忘录设计模式

聊聊flink StreamOperator的initializeState方法

MongoDB复合索引详解

【Flutter 知识集锦】从 restorationId 来说临时状态存储

巧用MongoDB部分索引优化性能问题

Flink1.4 如何使用状态

Mongodb分页查询优化下

聊聊flink StreamOperator的initializeState方法

itext7知识点研究（PDF编辑）

MongoDB中null性能问题以及如何应对

QSplitter（分离部件）

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