org.apache.hadoop.hbase.coordination

类 ZkOpenRegionCoordination

java.lang.Object

org.apache.hadoop.hbase.coordination.ZkOpenRegionCoordination

所有已实现的接口:

OpenRegionCoordination

@InterfaceAudience.Private
public class ZkOpenRegionCoordination
extends Object
implements OpenRegionCoordination

ZK-based implementation of OpenRegionCoordination.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	ZkOpenRegionCoordination.ZkOpenRegionDetails ZK-based implementation.

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

OpenRegionCoordination.OpenRegionDetails

构造器概要

构造器

构造器和说明
ZkOpenRegionCoordination(CoordinatedStateManager coordination, ZooKeeperWatcher watcher)

方法概要

方法

限定符和类型	方法和说明
boolean	commitOpenOnMasterSide(AssignmentManager assignmentManager, HRegionInfo regionInfo, OpenRegionCoordination.OpenRegionDetails ord) Commits opening operation on HM side (steps required for "commit" are determined by coordination implementation).
OpenRegionCoordination.OpenRegionDetails	getDetailsForNonCoordinatedOpening() No ZK tracking will be performed for that case.
OpenRegionCoordination.OpenRegionDetails	parseFromProtoRequest(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest.RegionOpenInfo regionOpenInfo) Parse ZK-related fields from request.
boolean	tickleOpening(OpenRegionCoordination.OpenRegionDetails ord, HRegionInfo regionInfo, RegionServerServices rsServices, String context) Update our OPENING state in zookeeper.
boolean	transitionFromOfflineToOpening(HRegionInfo regionInfo, OpenRegionCoordination.OpenRegionDetails ord) Transition ZK node from OFFLINE to OPENING.
boolean	transitionToOpened(HRegion r, OpenRegionCoordination.OpenRegionDetails ord) Tries to move regions to OPENED state.
boolean	tryTransitionFromOfflineToFailedOpen(RegionServerServices rsServices, HRegionInfo hri, OpenRegionCoordination.OpenRegionDetails ord) Try to transition to open.
boolean	tryTransitionFromOpeningToFailedOpen(HRegionInfo hri, OpenRegionCoordination.OpenRegionDetails ord) This is not guaranteed to succeed, we just do our best.

从类继承的方法 java.lang.Object

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

构造器详细资料

ZkOpenRegionCoordination

public ZkOpenRegionCoordination(CoordinatedStateManager coordination,
                        ZooKeeperWatcher watcher)

方法详细资料

transitionToOpened

public boolean transitionToOpened(HRegion r,
                         OpenRegionCoordination.OpenRegionDetails ord)
                           throws IOException

从接口复制的说明: OpenRegionCoordination

Tries to move regions to OPENED state.

指定者:

transitionToOpened 在接口中 OpenRegionCoordination

参数:

r - Region we're working on.

ord - details about region opening task

返回:

whether znode is successfully transitioned to OPENED state.

抛出:

IOException

transitionFromOfflineToOpening

public boolean transitionFromOfflineToOpening(HRegionInfo regionInfo,
                                     OpenRegionCoordination.OpenRegionDetails ord)

Transition ZK node from OFFLINE to OPENING.

指定者:

transitionFromOfflineToOpening 在接口中 OpenRegionCoordination

参数:

regionInfo - region info instance

ord - - instance of open region details, for ZK implementation will include version Of OfflineNode that needs to be compared before changing the node's state from OFFLINE

返回:

True if successful transition.

tickleOpening

public boolean tickleOpening(OpenRegionCoordination.OpenRegionDetails ord,
                    HRegionInfo regionInfo,
                    RegionServerServices rsServices,
                    String context)

Update our OPENING state in zookeeper. Do this so master doesn't timeout this region-in-transition. We may lose the znode ownership during the open. Currently its too hard interrupting ongoing region open. Just let it complete and check we still have the znode after region open.

指定者:

tickleOpening 在接口中 OpenRegionCoordination

参数:

context - Some context to add to logs if failure

ord - details about opening task.

regionInfo - region we're working on.

rsServices - instance of RegionServerrServices

返回:

True if successful transition.

tryTransitionFromOfflineToFailedOpen

public boolean tryTransitionFromOfflineToFailedOpen(RegionServerServices rsServices,
                                           HRegionInfo hri,
                                           OpenRegionCoordination.OpenRegionDetails ord)

Try to transition to open. This is not guaranteed to succeed, we just do our best.

指定者:

tryTransitionFromOfflineToFailedOpen 在接口中 OpenRegionCoordination

参数:

rsServices -

hri - Region we're working on.

ord - Details about region open task

返回:

whether znode is successfully transitioned to FAILED_OPEN state.

tryTransitionFromOpeningToFailedOpen

public boolean tryTransitionFromOpeningToFailedOpen(HRegionInfo hri,
                                           OpenRegionCoordination.OpenRegionDetails ord)

This is not guaranteed to succeed, we just do our best.

指定者:

tryTransitionFromOpeningToFailedOpen 在接口中 OpenRegionCoordination

参数:

hri - Region we're working on.

ord - details about region opening task

返回:

whether znode is successfully transitioned to FAILED_OPEN state.

parseFromProtoRequest

public OpenRegionCoordination.OpenRegionDetails parseFromProtoRequest(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest.RegionOpenInfo regionOpenInfo)

Parse ZK-related fields from request.

指定者:

parseFromProtoRequest 在接口中 OpenRegionCoordination

返回:

instance of OpenRegionDetails.

getDetailsForNonCoordinatedOpening

public OpenRegionCoordination.OpenRegionDetails getDetailsForNonCoordinatedOpening()

No ZK tracking will be performed for that case. This method should be used when we want to construct CloseRegionDetails, but don't want any coordination on that (when it's initiated by regionserver), so no znode state transitions will be performed.

指定者:

getDetailsForNonCoordinatedOpening 在接口中 OpenRegionCoordination

commitOpenOnMasterSide

public boolean commitOpenOnMasterSide(AssignmentManager assignmentManager,
                             HRegionInfo regionInfo,
                             OpenRegionCoordination.OpenRegionDetails ord)

从接口复制的说明: OpenRegionCoordination

Commits opening operation on HM side (steps required for "commit" are determined by coordination implementation).

指定者:

commitOpenOnMasterSide 在接口中 OpenRegionCoordination

返回:

true if committed successfully, false otherwise.