org.apache.flink.runtime.checkpoint.filemerging

Class FileMergingSnapshotManager.SubtaskKey

java.lang.Object

org.apache.flink.runtime.checkpoint.filemerging.FileMergingSnapshotManager.SubtaskKey

Enclosing interface:

FileMergingSnapshotManager

public static final class FileMergingSnapshotManager.SubtaskKey
extends Object

A key identifies a subtask. A subtask can be identified by the operator id, subtask index and the parallelism. Note that this key should be consistent across job attempts.

Constructor Summary

Constructors

Constructor and Description
SubtaskKey(org.apache.flink.api.common.JobID jobID, OperatorID operatorID, org.apache.flink.api.common.TaskInfo taskInfo)
SubtaskKey(String jobIDString, String operatorIDString, int subtaskIndex, int parallelism)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String	getJobIDString()
String	getManagedDirName() Generate an unique managed directory name for one subtask.
int	hashCode()
static FileMergingSnapshotManager.SubtaskKey	of(Environment environment)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SubtaskKey

public SubtaskKey(org.apache.flink.api.common.JobID jobID,
                  OperatorID operatorID,
                  org.apache.flink.api.common.TaskInfo taskInfo)

SubtaskKey

@VisibleForTesting
public SubtaskKey(String jobIDString,
                                     String operatorIDString,
                                     int subtaskIndex,
                                     int parallelism)

Method Detail

of

public static FileMergingSnapshotManager.SubtaskKey of(Environment environment)

getJobIDString

@VisibleForTesting
public String getJobIDString()

getManagedDirName

public String getManagedDirName()

Generate an unique managed directory name for one subtask.

Returns:

the managed directory name.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object