org.apache.flink.runtime.checkpoint.stats

Class OperatorCheckpointStats

java.lang.Object

org.apache.flink.runtime.checkpoint.stats.CheckpointStats

org.apache.flink.runtime.checkpoint.stats.OperatorCheckpointStats

public class OperatorCheckpointStats
extends CheckpointStats

Statistics for a specific checkpoint per operator.

Constructor Summary

Constructors

Constructor and Description
OperatorCheckpointStats(long checkpointId, long triggerTimestamp, long duration, long stateSize, long[][] subTaskStats) Creates a checkpoint statistic for an operator.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	getNumberOfSubTasks() Returns the number of sub tasks.
long	getSubTaskDuration(int index) Returns the duration of a specific sub task.
long	getSubTaskStateSize(int index) Returns the state size of a specific sub task.
int	hashCode()
String	toString()

Methods inherited from class org.apache.flink.runtime.checkpoint.stats.CheckpointStats

getCheckpointId, getDuration, getStateSize, getTriggerTimestamp

Methods inherited from class java.lang.Object

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

Constructor Detail

OperatorCheckpointStats

public OperatorCheckpointStats(long checkpointId,
                               long triggerTimestamp,
                               long duration,
                               long stateSize,
                               long[][] subTaskStats)

Creates a checkpoint statistic for an operator.

Parameters:

checkpointId - Checkpoint ID this statistic belongs to

triggerTimestamp - Timestamp when the corresponding checkpoint was triggered

duration - Duration (in milliseconds) to complete this statistic

stateSize - State size (in bytes)

subTaskStats - Stats per subtask ([i][0] and [i][1] encode the duration and state size for sub task i respectively).

Method Detail

getNumberOfSubTasks

public int getNumberOfSubTasks()

Returns the number of sub tasks.

Returns:

Number of sub tasks.

getSubTaskDuration

public long getSubTaskDuration(int index)

Returns the duration of a specific sub task.

Returns:

Duration of the sub task.

getSubTaskStateSize

public long getSubTaskStateSize(int index)

Returns the state size of a specific sub task.

Returns:

The state size in bytes.

toString

public String toString()

Overrides:

toString in class CheckpointStats

equals

public boolean equals(Object o)

Overrides:

equals in class CheckpointStats

hashCode

public int hashCode()

Overrides:

hashCode in class CheckpointStats