use of org.apache.flink.util.SerializableObject in project flink by apache.
the class CheckpointStateRestoreTest method testSetState.
/**
* Tests that on restore the task state is reset for each stateful task.
*/
@Test
public void testSetState() {
try {
KeyGroupRange keyGroupRange = KeyGroupRange.of(0, 0);
List<SerializableObject> testStates = Collections.singletonList(new SerializableObject());
final KeyedStateHandle serializedKeyGroupStates = CheckpointCoordinatorTestingUtils.generateKeyGroupState(keyGroupRange, testStates);
final JobVertexID statefulId = new JobVertexID();
final JobVertexID statelessId = new JobVertexID();
ExecutionGraph graph = new CheckpointCoordinatorTestingUtils.CheckpointExecutionGraphBuilder().addJobVertex(statefulId, 3, 256).addJobVertex(statelessId, 2, 256).build();
ExecutionJobVertex stateful = graph.getJobVertex(statefulId);
ExecutionJobVertex stateless = graph.getJobVertex(statelessId);
ExecutionVertex stateful1 = stateful.getTaskVertices()[0];
ExecutionVertex stateful2 = stateful.getTaskVertices()[1];
ExecutionVertex stateful3 = stateful.getTaskVertices()[2];
ExecutionVertex stateless1 = stateless.getTaskVertices()[0];
ExecutionVertex stateless2 = stateless.getTaskVertices()[1];
Execution statefulExec1 = stateful1.getCurrentExecutionAttempt();
Execution statefulExec2 = stateful2.getCurrentExecutionAttempt();
Execution statefulExec3 = stateful3.getCurrentExecutionAttempt();
Execution statelessExec1 = stateless1.getCurrentExecutionAttempt();
Execution statelessExec2 = stateless2.getCurrentExecutionAttempt();
ManuallyTriggeredScheduledExecutor manuallyTriggeredScheduledExecutor = new ManuallyTriggeredScheduledExecutor();
CheckpointCoordinator coord = new CheckpointCoordinatorBuilder().setExecutionGraph(graph).setTimer(manuallyTriggeredScheduledExecutor).build();
// create ourselves a checkpoint with state
coord.triggerCheckpoint(false);
manuallyTriggeredScheduledExecutor.triggerAll();
PendingCheckpoint pending = coord.getPendingCheckpoints().values().iterator().next();
final long checkpointId = pending.getCheckpointId();
final TaskStateSnapshot subtaskStates = new TaskStateSnapshot();
subtaskStates.putSubtaskStateByOperatorID(OperatorID.fromJobVertexID(statefulId), OperatorSubtaskState.builder().setManagedKeyedState(serializedKeyGroupStates).build());
coord.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(graph.getJobID(), statefulExec1.getAttemptId(), checkpointId, new CheckpointMetrics(), subtaskStates), TASK_MANAGER_LOCATION_INFO);
coord.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(graph.getJobID(), statefulExec2.getAttemptId(), checkpointId, new CheckpointMetrics(), subtaskStates), TASK_MANAGER_LOCATION_INFO);
coord.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(graph.getJobID(), statefulExec3.getAttemptId(), checkpointId, new CheckpointMetrics(), subtaskStates), TASK_MANAGER_LOCATION_INFO);
coord.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(graph.getJobID(), statelessExec1.getAttemptId(), checkpointId), TASK_MANAGER_LOCATION_INFO);
coord.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(graph.getJobID(), statelessExec2.getAttemptId(), checkpointId), TASK_MANAGER_LOCATION_INFO);
assertEquals(1, coord.getNumberOfRetainedSuccessfulCheckpoints());
assertEquals(0, coord.getNumberOfPendingCheckpoints());
// let the coordinator inject the state
assertTrue(coord.restoreLatestCheckpointedStateToAll(new HashSet<>(Arrays.asList(stateful, stateless)), false));
// verify that each stateful vertex got the state
assertEquals(subtaskStates, statefulExec1.getTaskRestore().getTaskStateSnapshot());
assertEquals(subtaskStates, statefulExec2.getTaskRestore().getTaskStateSnapshot());
assertEquals(subtaskStates, statefulExec3.getTaskRestore().getTaskStateSnapshot());
assertNull(statelessExec1.getTaskRestore());
assertNull(statelessExec2.getTaskRestore());
} catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
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