Package org.apache.flink.streaming.runtime.io.checkpointing
package org.apache.flink.streaming.runtime.io.checkpointing
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ClassDescriptionUtility for barrier alignment.A handle to a delayed action which can be cancelled.It can register a task to be executed some time later.The
CheckpointBarrierHandlerreacts to checkpoint barrier arriving from the input channels.TheCheckpointBarrierTrackerkeeps track of what checkpoint barriers have been received from which input channels.TheCheckpointedInputGateusesCheckpointBarrierHandlerto handle incomingCheckpointBarrierfrom theInputGate.Utility for creatingCheckpointedInputGatebased on checkpoint mode forStreamOneInputProcessor.SingleCheckpointBarrierHandleris used for triggering checkpoint while reading the first barrier and keeping track of the number of received barriers and consumed barriers.Tracks status of upstream channels while they recover.