MonoidState

abstract def checkpoint(): Array[Byte]

get a binary snapshot of state usually invoked by the framework

abstract def recover(timestamp: TimeStamp, bytes: Array[Byte]): Unit

recover state to a previous checkpoint usually invoked by the framework

abstract def update(timestamp: TimeStamp, t: T): Unit

update state on a new message this is invoked by user

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

var checkpointTime: Long

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

def get: Option[T]

unwrap the raw value of state

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def setNextCheckpointTime(nextCheckpointTime: TimeStamp): Unit

set next checkpoint time should be invoked by the framework

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

def updateState(timestamp: TimeStamp, t: T): Unit

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit