org.apache.hadoop.hbase.coordination

类 ZKSplitLogManagerCoordination

java.lang.Object

org.apache.hadoop.hbase.zookeeper.ZKListener

org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination

所有已实现的接口:

SplitLogManagerCoordination

@InterfaceAudience.Private
public class ZKSplitLogManagerCoordination
extends ZKListener
implements SplitLogManagerCoordination

ZooKeeper based implementation of SplitLogManagerCoordination

嵌套类概要

嵌套类

限定符和类型	类和说明
class	ZKSplitLogManagerCoordination.CreateAsyncCallback Asynchronous handler for zk create node results.
class	ZKSplitLogManagerCoordination.CreateRescanAsyncCallback Asynchronous handler for zk create RESCAN-node results.
class	ZKSplitLogManagerCoordination.DeleteAsyncCallback Asynchronous handler for zk delete node results.
class	ZKSplitLogManagerCoordination.GetDataAsyncCallback Asynchronous handler for zk get-data-set-watch on node results.
static interface	ZKSplitLogManagerCoordination.TaskFinisher SplitLogManager can use objects implementing this interface to finish off a partially done task by SplitLogWorker.

从接口继承的嵌套类/接口 org.apache.hadoop.hbase.coordination.SplitLogManagerCoordination

SplitLogManagerCoordination.SplitLogManagerDetails

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_MAX_RESUBMIT
static int	DEFAULT_TIMEOUT
static int	DEFAULT_ZK_RETRIES
boolean	ignoreZKDeleteForTesting

从类继承的字段 org.apache.hadoop.hbase.zookeeper.ZKListener

watcher

构造器概要

构造器

构造器和说明
ZKSplitLogManagerCoordination(org.apache.hadoop.conf.Configuration conf, ZKWatcher watcher)

方法概要

限定符和类型	方法和说明
void	checkTasks() tells Coordination that it should check for new tasks
void	checkTaskStillAvailable(String path) Check that the task is still there
void	deleteTask(String path)
SplitLogManagerCoordination.SplitLogManagerDetails	getDetails() Returns the configuration that was provided previously
void	init() Support method to init constants such as timeout.
void	nodeDataChanged(String path)
String	prepareTask(String taskname) Prepare the new task
int	remainingTasksInCoordination() Return the number of remaining tasks
boolean	resubmitTask(String path, SplitLogManager.Task task, SplitLogManager.ResubmitDirective directive) Resubmit the task in case if found unassigned or failed
void	setDetails(SplitLogManagerCoordination.SplitLogManagerDetails details) Provide the configuration from the SplitLogManager
void	setIgnoreDeleteForTesting(boolean b) Temporary function that is used by unit tests only
void	submitTask(String path)

从类继承的方法 org.apache.hadoop.hbase.zookeeper.ZKListener

getWatcher, nodeChildrenChanged, nodeCreated, nodeDeleted

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT_TIMEOUT

public static final int DEFAULT_TIMEOUT

另请参阅:

常量字段值

DEFAULT_ZK_RETRIES

public static final int DEFAULT_ZK_RETRIES

另请参阅:

常量字段值

DEFAULT_MAX_RESUBMIT

public static final int DEFAULT_MAX_RESUBMIT

另请参阅:

常量字段值

ignoreZKDeleteForTesting

public boolean ignoreZKDeleteForTesting

构造器详细资料

ZKSplitLogManagerCoordination

public ZKSplitLogManagerCoordination(org.apache.hadoop.conf.Configuration conf,
                                     ZKWatcher watcher)

方法详细资料

init

public void init()
          throws IOException

从接口复制的说明: SplitLogManagerCoordination

Support method to init constants such as timeout. Mostly required for UTs.

指定者:

init 在接口中 SplitLogManagerCoordination

抛出:

IOException

prepareTask

public String prepareTask(String taskname)

从接口复制的说明: SplitLogManagerCoordination

Prepare the new task

指定者:

prepareTask 在接口中 SplitLogManagerCoordination

参数:

taskname - name of the task

返回:

the task id

remainingTasksInCoordination

public int remainingTasksInCoordination()

从接口复制的说明: SplitLogManagerCoordination

Return the number of remaining tasks

指定者:

remainingTasksInCoordination 在接口中 SplitLogManagerCoordination

deleteTask

public void deleteTask(String path)

指定者:

deleteTask 在接口中 SplitLogManagerCoordination

参数:

path - to be removed

resubmitTask

public boolean resubmitTask(String path,
                            SplitLogManager.Task task,
                            SplitLogManager.ResubmitDirective directive)

从接口复制的说明: SplitLogManagerCoordination

Resubmit the task in case if found unassigned or failed

指定者:

resubmitTask 在接口中 SplitLogManagerCoordination

参数:

path - path related to task

task - to resubmit

directive - whether it should be forced

返回:

whether it was successful

checkTasks

public void checkTasks()

从接口复制的说明: SplitLogManagerCoordination

tells Coordination that it should check for new tasks

指定者:

checkTasks 在接口中 SplitLogManagerCoordination

submitTask

public void submitTask(String path)

指定者:

submitTask 在接口中 SplitLogManagerCoordination

参数:

path - to be submitted

checkTaskStillAvailable

public void checkTaskStillAvailable(String path)

从接口复制的说明: SplitLogManagerCoordination

Check that the task is still there

指定者:

checkTaskStillAvailable 在接口中 SplitLogManagerCoordination

参数:

path - node to check

nodeDataChanged

public void nodeDataChanged(String path)

覆盖:

nodeDataChanged 在类中 ZKListener

setDetails

public void setDetails(SplitLogManagerCoordination.SplitLogManagerDetails details)

从接口复制的说明: SplitLogManagerCoordination

Provide the configuration from the SplitLogManager

指定者:

setDetails 在接口中 SplitLogManagerCoordination

getDetails

public SplitLogManagerCoordination.SplitLogManagerDetails getDetails()

从接口复制的说明: SplitLogManagerCoordination

Returns the configuration that was provided previously

指定者:

getDetails 在接口中 SplitLogManagerCoordination

setIgnoreDeleteForTesting

public void setIgnoreDeleteForTesting(boolean b)

Temporary function that is used by unit tests only