org.apache.flink.runtime.executiongraph

Interface ExecutionStatusListener

All Known Implementing Classes:

StatusListenerMessenger

public interface ExecutionStatusListener

Interface for observers that monitor the status of individual task executions.

Method Summary

Modifier and Type	Method and Description
void	executionStatusChanged(org.apache.flink.api.common.JobID jobID, JobVertexID vertexID, String taskName, int totalNumberOfSubTasks, int subtaskIndex, ExecutionAttemptID executionID, ExecutionState newExecutionState, long timestamp, String optionalMessage) Called whenever the execution status of a task changes.

Method Detail

executionStatusChanged

void executionStatusChanged(org.apache.flink.api.common.JobID jobID,
                            JobVertexID vertexID,
                            String taskName,
                            int totalNumberOfSubTasks,
                            int subtaskIndex,
                            ExecutionAttemptID executionID,
                            ExecutionState newExecutionState,
                            long timestamp,
                            String optionalMessage)

Called whenever the execution status of a task changes.

Parameters:

jobID - The ID of the job

vertexID - The ID of the task vertex

taskName - The name of the task

totalNumberOfSubTasks - The parallelism of the task

subtaskIndex - The subtask's parallel index

executionID - The ID of the execution attempt

newExecutionState - The status to which the task switched

timestamp - The timestamp when the change occurred. Informational only.

optionalMessage - An optional message attached to the status change, like an exception message.