org.apache.flink.runtime.highavailability.zookeeper

Class ZooKeeperMultipleComponentLeaderElectionHaServices

java.lang.Object

org.apache.flink.runtime.highavailability.AbstractHaServices

org.apache.flink.runtime.highavailability.zookeeper.AbstractZooKeeperHaServices

org.apache.flink.runtime.highavailability.zookeeper.ZooKeeperMultipleComponentLeaderElectionHaServices

All Implemented Interfaces:

AutoCloseable, GloballyCleanableResource, ClientHighAvailabilityServices, HighAvailabilityServices

public class ZooKeeperMultipleComponentLeaderElectionHaServices
extends AbstractZooKeeperHaServices

ZooKeeper HA services that only use a single leader election per process.

 /flink
      +/cluster_id_1/leader/latch
      |            |       /resource_manager/connection_info
      |            |       /dispatcher/connection_info
      |            |       /rest_server/connection_info
      |            |       /job-id-1/connection_info
      |            |       /job-id-2/connection_info
      |            |
      |            |
      |            +jobgraphs/job-id-1
      |            |         /job-id-2
      |            +jobs/job-id-1/checkpoints/latest
      |                 |                    /latest-1
      |                 |                    /latest-2
      |                 |       /checkpoint_id_counter
 

Field Summary

Fields inherited from class org.apache.flink.runtime.highavailability.AbstractHaServices

configuration, ioExecutor, logger

Fields inherited from interface org.apache.flink.runtime.highavailability.HighAvailabilityServices

DEFAULT_JOB_ID, DEFAULT_LEADER_ID

Constructor Summary

Constructors

Constructor and Description
ZooKeeperMultipleComponentLeaderElectionHaServices(CuratorFrameworkWithUnhandledErrorListener curatorFrameworkWrapper, Configuration config, Executor ioExecutor, BlobStoreService blobStoreService, FatalErrorHandler fatalErrorHandler)

Method Summary

Modifier and Type	Method and Description
protected LeaderElectionService	createLeaderElectionService(String leaderName) Create leader election service with specified leaderName.
protected LeaderRetrievalService	createLeaderRetrievalService(String leaderPath) Create leader retrieval service with specified leaderName.
protected String	getLeaderPathForDispatcher() Get the leader path for Dispatcher.
protected String	getLeaderPathForJobManager(JobID jobID) Get the leader path for specific JobManager.
protected String	getLeaderPathForResourceManager() Get the leader path for ResourceManager.
protected String	getLeaderPathForRestServer() Get the leader path for RestServer.
protected void	internalClose() Closes the components which is used for external operations(e.g.

Methods inherited from class org.apache.flink.runtime.highavailability.zookeeper.AbstractZooKeeperHaServices

createCheckpointRecoveryFactory, createJobGraphStore, deleteZNode, getCuratorFramework, internalCleanup, internalCleanupJobData

Methods inherited from class org.apache.flink.runtime.highavailability.AbstractHaServices

close, closeAndCleanupAllData, createBlobStore, getCheckpointRecoveryFactory, getClusterRestEndpointLeaderElectionService, getClusterRestEndpointLeaderRetriever, getDispatcherLeaderElectionService, getDispatcherLeaderRetriever, getJobGraphStore, getJobManagerLeaderElectionService, getJobManagerLeaderRetriever, getJobManagerLeaderRetriever, getJobResultStore, getResourceManagerLeaderElectionService, getResourceManagerLeaderRetriever, globalCleanupAsync

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.runtime.highavailability.HighAvailabilityServices

getWebMonitorLeaderElectionService, getWebMonitorLeaderRetriever

Constructor Detail

ZooKeeperMultipleComponentLeaderElectionHaServices

public ZooKeeperMultipleComponentLeaderElectionHaServices(CuratorFrameworkWithUnhandledErrorListener curatorFrameworkWrapper,
                                                          Configuration config,
                                                          Executor ioExecutor,
                                                          BlobStoreService blobStoreService,
                                                          FatalErrorHandler fatalErrorHandler)
                                                   throws Exception

Throws:

Exception

Method Detail

createLeaderElectionService

protected LeaderElectionService createLeaderElectionService(String leaderName)

Description copied from class: AbstractHaServices

Create leader election service with specified leaderName.

Specified by:

createLeaderElectionService in class AbstractHaServices

Parameters:

leaderName - ConfigMap name in Kubernetes or child node path in Zookeeper.

Returns:

Return LeaderElectionService using Zookeeper or Kubernetes.

createLeaderRetrievalService

protected LeaderRetrievalService createLeaderRetrievalService(String leaderPath)

Description copied from class: AbstractHaServices

Create leader retrieval service with specified leaderName.

Specified by:

createLeaderRetrievalService in class AbstractHaServices

Parameters:

leaderPath - ConfigMap name in Kubernetes or child node path in Zookeeper.

Returns:

Return LeaderRetrievalService using Zookeeper or Kubernetes.

internalClose

protected void internalClose()
                      throws Exception

Description copied from class: AbstractHaServices

Closes the components which is used for external operations(e.g. Zookeeper Client, Kubernetes Client).

Overrides:

internalClose in class AbstractZooKeeperHaServices

Throws:

Exception - if the close operation failed

getLeaderPathForResourceManager

protected String getLeaderPathForResourceManager()

Description copied from class: AbstractHaServices

Get the leader path for ResourceManager.

Specified by:

getLeaderPathForResourceManager in class AbstractHaServices

Returns:

Return the ResourceManager leader name. It is ConfigMap name in Kubernetes or child node path in Zookeeper.

getLeaderPathForDispatcher

protected String getLeaderPathForDispatcher()

Description copied from class: AbstractHaServices

Get the leader path for Dispatcher.

Specified by:

getLeaderPathForDispatcher in class AbstractHaServices

Returns:

Return the Dispatcher leader name. It is ConfigMap name in Kubernetes or child node path in Zookeeper.

getLeaderPathForJobManager

protected String getLeaderPathForJobManager(JobID jobID)

Description copied from class: AbstractHaServices

Get the leader path for specific JobManager.

Specified by:

getLeaderPathForJobManager in class AbstractHaServices

Parameters:

jobID - job id

Returns:

Return the JobManager leader name for specified job id. It is ConfigMap name in Kubernetes or child node path in Zookeeper.

getLeaderPathForRestServer

protected String getLeaderPathForRestServer()

Description copied from class: AbstractHaServices

Get the leader path for RestServer.

Specified by:

getLeaderPathForRestServer in class AbstractHaServices

Returns:

Return the RestServer leader name. It is ConfigMap name in Kubernetes or child node path in Zookeeper.