Package org.apache.flink.runtime.checkpoint

Class VertexFinishedStateChecker

java.lang.Object

org.apache.flink.runtime.checkpoint.VertexFinishedStateChecker

public class VertexFinishedStateChecker
extends Object

This class encapsulates the operation that checks if there are illegal modification to the JobGraph when restoring from a checkpoint with partially or fully finished operator states.

As a whole, it ensures

1. All the operators inside a JobVertex have the same finished state.
2. The predecessors of a fully finished vertex must also be fully finished.
3. The predecessors of a partially finished vertex
   • If connected via ALL_TO_ALL edge, the predecessor must be fully finished.
   • If connected via POINTWISE edge, the predecessor must be partially finished or fully finished.

Constructor Summary

Constructors

Constructor	Description
VertexFinishedStateChecker(Set<ExecutionJobVertex> vertices, Map<OperatorID,OperatorState> operatorStates)

Method Summary

Modifier and Type	Method	Description
void	validateOperatorsFinishedState()

Methods inherited from class java.lang.Object

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

Constructor Detail

VertexFinishedStateChecker

public VertexFinishedStateChecker(Set<ExecutionJobVertex> vertices,
                                  Map<OperatorID,OperatorState> operatorStates)

Method Detail

validateOperatorsFinishedState

public void validateOperatorsFinishedState()