Package org.apache.flink.kubernetes.highavailability

Class KubernetesCheckpointIDCounter

java.lang.Object

org.apache.flink.kubernetes.highavailability.KubernetesCheckpointIDCounter

All Implemented Interfaces:

org.apache.flink.runtime.checkpoint.CheckpointIDCounter

public class KubernetesCheckpointIDCounter
extends Object
implements org.apache.flink.runtime.checkpoint.CheckpointIDCounter

CheckpointIDCounter implementation for Kubernetes. The counter will be stored in JobManager-JobID-leader ConfigMap. The key is Constants.CHECKPOINT_COUNTER_KEY, and value is counter value.

Field Summary

Fields inherited from interface org.apache.flink.runtime.checkpoint.CheckpointIDCounter

INITIAL_CHECKPOINT_ID

Constructor Summary

Constructors

Constructor	Description
KubernetesCheckpointIDCounter(FlinkKubeClient kubeClient, String configMapName, String lockIdentity)

Method Summary

Modifier and Type	Method	Description
long	get()
long	getAndIncrement()
void	setCount(long newCount)
CompletableFuture<Void>	shutdown(org.apache.flink.api.common.JobStatus jobStatus)
void	start()

Methods inherited from class java.lang.Object

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

Constructor Details

KubernetesCheckpointIDCounter

public KubernetesCheckpointIDCounter(FlinkKubeClient kubeClient,
 String configMapName,
 @Nullable
 String lockIdentity)

Method Details

start

public void start()

Specified by:

start in interface org.apache.flink.runtime.checkpoint.CheckpointIDCounter

shutdown

public CompletableFuture<Void> shutdown(org.apache.flink.api.common.JobStatus jobStatus)

Specified by:

shutdown in interface org.apache.flink.runtime.checkpoint.CheckpointIDCounter

getAndIncrement

public long getAndIncrement()
                     throws Exception

Specified by:

getAndIncrement in interface org.apache.flink.runtime.checkpoint.CheckpointIDCounter

Throws:

Exception

get

public long get()

Specified by:

get in interface org.apache.flink.runtime.checkpoint.CheckpointIDCounter

setCount

public void setCount(long newCount)
              throws Exception

Specified by:

setCount in interface org.apache.flink.runtime.checkpoint.CheckpointIDCounter

Throws:

Exception