类 org.apache.hadoop.hbase.HRegionInfo
的使用

使用HRegionInfo的程序包

程序包	说明
org.apache.hadoop.hbase
org.apache.hadoop.hbase.client	Provides HBase Client Table of Contents Overview Example API Usage Overview To administer HBase, create and drop tables, list and alter tables, use Admin.
org.apache.hadoop.hbase.master
org.apache.hadoop.hbase.protobuf	Holds classes generated from protobuf src/main/protobuf definition files.
org.apache.hadoop.hbase.zookeeper

org.apache.hadoop.hbase中HRegionInfo的使用

声明为HRegionInfo的org.apache.hadoop.hbase中的字段

限定符和类型	字段和说明
static HRegionInfo	HRegionInfo.FIRST_META_REGIONINFO HRegionInfo for first meta region

返回HRegionInfo的org.apache.hadoop.hbase中的方法

限定符和类型	方法和说明
static HRegionInfo	HRegionInfo.convert(org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionInfo proto) Convert a RegionInfo to a HRegionInfo
static HRegionInfo	MetaTableAccessor.getHRegionInfo(Result data) Returns HRegionInfo object from the column HConstants.CATALOG_FAMILY:HConstants.REGIONINFO_QUALIFIER of the catalog table Result.
static HRegionInfo	HRegionInfo.getHRegionInfo(Result data) 已过时。 use MetaTableAccessor methods for interacting with meta layouts
static HRegionInfo	HRegionInfo.getHRegionInfo(Result r, byte[] qualifier) 已过时。 use MetaTableAccessor methods for interacting with meta layouts
HRegionInfo	HRegionLocation.getRegionInfo()
static HRegionInfo	HRegionInfo.parseFrom(byte[] bytes)
static HRegionInfo	HRegionInfo.parseFrom(byte[] bytes, int offset, int len)
static HRegionInfo	HRegionInfo.parseFrom(DataInputStream in) Parses an HRegionInfo instance from the passed in stream.
static HRegionInfo	HRegionInfo.parseFromOrNull(byte[] bytes)
static HRegionInfo	HRegionInfo.parseFromOrNull(byte[] bytes, int offset, int len)
protected static HRegionInfo	MetaTableAccessor.parseRegionInfoFromRegionName(byte[] regionName) Returns an HRI parsed from this regionName.

返回变量类型为HRegionInfo的类型的org.apache.hadoop.hbase中的方法

限定符和类型	方法和说明
static PairOfSameType<HRegionInfo>	MetaTableAccessor.getDaughterRegions(Result data) Returns the daughter regions by reading the corresponding columns of the catalog table Result.
static PairOfSameType<HRegionInfo>	HRegionInfo.getDaughterRegions(Result data) 已过时。 use MetaTableAccessor methods for interacting with meta layouts
static Pair<HRegionInfo,ServerName>	HRegionInfo.getHRegionInfoAndServerName(Result r) 已过时。 use MetaTableAccessor methods for interacting with meta layouts
static PairOfSameType<HRegionInfo>	MetaTableAccessor.getMergeRegions(Result data) Returns the merge regions by reading the corresponding columns of the catalog table Result.
static PairOfSameType<HRegionInfo>	HRegionInfo.getMergeRegions(Result data) 已过时。 use MetaTableAccessor methods for interacting with meta layouts
static Pair<HRegionInfo,ServerName>	MetaTableAccessor.getRegion(Connection connection, byte[] regionName) 已过时。 use MetaTableAccessor.getRegionLocation(Connection, byte[]) instead
static Pair<HRegionInfo,HRegionInfo>	MetaTableAccessor.getRegionsFromMergeQualifier(Connection connection, byte[] regionName) Get regions from the merge qualifier of the specified merged region
static Pair<HRegionInfo,HRegionInfo>	MetaTableAccessor.getRegionsFromMergeQualifier(Connection connection, byte[] regionName) Get regions from the merge qualifier of the specified merged region
static NavigableMap<HRegionInfo,Result>	MetaTableAccessor.getServerUserRegions(Connection connection, ServerName serverName)
static List<HRegionInfo>	MetaTableAccessor.getTableRegions(ZooKeeperWatcher zkw, Connection connection, TableName tableName) Gets all of the regions of the specified table.
static List<HRegionInfo>	MetaTableAccessor.getTableRegions(ZooKeeperWatcher zkw, Connection connection, TableName tableName, boolean excludeOfflinedSplitParents) Gets all of the regions of the specified table.
static List<HRegionInfo>	MetaTableAccessor.getTableRegions(ZooKeeperWatcher zkw, Connection connection, TableName tableName, boolean excludeOfflinedSplitParents, boolean excludeReplicaRegions) Gets all of the regions of the specified table.
static List<Pair<HRegionInfo,ServerName>>	MetaTableAccessor.getTableRegionsAndLocations(ZooKeeperWatcher zkw, Connection connection, TableName tableName)
static List<Pair<HRegionInfo,ServerName>>	MetaTableAccessor.getTableRegionsAndLocations(ZooKeeperWatcher zkw, Connection connection, TableName tableName, boolean excludeOfflinedSplitParents)
static List<Pair<HRegionInfo,ServerName>>	MetaTableAccessor.getTableRegionsAndLocations(ZooKeeperWatcher zkw, Connection connection, TableName tableName, boolean excludeOfflinedSplitParents, boolean excludeReplicaRegions)
static List<HRegionInfo>	HRegionInfo.parseDelimitedFrom(byte[] bytes, int offset, int length) Parses all the HRegionInfo instances from the passed in stream until EOF.

参数类型为HRegionInfo的org.apache.hadoop.hbase中的方法

限定符和类型	方法和说明
static void	MetaTableAccessor.addDaughter(Connection connection, HRegionInfo regionInfo, ServerName sn, long openSeqNum) Adds a daughter region entry to meta.
static Put	MetaTableAccessor.addDaughtersToPut(Put put, HRegionInfo splitA, HRegionInfo splitB) Adds split daughters to the Put
static void	MetaTableAccessor.addRegionToMeta(Connection connection, HRegionInfo regionInfo) Adds a hbase:meta row for the specified new region.
static void	MetaTableAccessor.addRegionToMeta(Connection connection, HRegionInfo regionInfo, HRegionInfo splitA, HRegionInfo splitB) Adds a (single) hbase:meta row for the specified new region and its daughters.
static void	MetaTableAccessor.addRegionToMeta(Table meta, HRegionInfo regionInfo) Adds a hbase:meta row for the specified new region to the given catalog table.
static void	MetaTableAccessor.addRegionToMeta(Table meta, HRegionInfo regionInfo, HRegionInfo splitA, HRegionInfo splitB) Adds a (single) hbase:meta row for the specified new region and its daughters.
static boolean	HRegionInfo.areAdjacent(HRegionInfo regionA, HRegionInfo regionB) Check whether two regions are adjacent
int	HRegionInfo.compareTo(HRegionInfo o)
static org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.RegionInfo	HRegionInfo.convert(HRegionInfo info) Convert a HRegionInfo to a RegionInfo
static void	MetaTableAccessor.deleteMergeQualifiers(Connection connection, HRegionInfo mergedRegion) Deletes merge qualifiers for the specified merged region.
static void	MetaTableAccessor.deleteRegion(Connection connection, HRegionInfo regionInfo) Deletes the specified region from META.
static byte[]	MetaTableAccessor.getMetaKeyForRegion(HRegionInfo regionInfo) Returns the row key to use for this regionInfo
static HRegionLocation	MetaTableAccessor.getRegionLocation(Connection connection, HRegionInfo regionInfo) Returns the HRegionLocation from meta for the given region
static String	HRegionInfo.getRegionNameAsString(HRegionInfo ri, byte[] regionName)
static Delete	MetaTableAccessor.makeDeleteFromRegionInfo(HRegionInfo regionInfo) Generates and returns a Delete containing the region info for the catalog table
static Delete	MetaTableAccessor.makeDeleteFromRegionInfo(HRegionInfo regionInfo, long ts) Generates and returns a Delete containing the region info for the catalog table
static Put	MetaTableAccessor.makePutFromRegionInfo(HRegionInfo regionInfo) Generates and returns a Put containing the region into for the catalog table
static Put	MetaTableAccessor.makePutFromRegionInfo(HRegionInfo regionInfo, long ts) Generates and returns a Put containing the region into for the catalog table
static void	MetaTableAccessor.mergeRegions(Connection connection, HRegionInfo mergedRegion, HRegionInfo regionA, HRegionInfo regionB, ServerName sn, int regionReplication, long masterSystemTime) Merge the two regions into one in an atomic operation.
static void	MetaTableAccessor.splitRegion(Connection connection, HRegionInfo parent, HRegionInfo splitA, HRegionInfo splitB, ServerName sn, int regionReplication) Splits the region into two in an atomic operation.
static byte[]	HRegionInfo.toDelimitedByteArray(HRegionInfo... infos) Serializes given HRegionInfo's as a byte array.
static void	MetaTableAccessor.updateRegionLocation(Connection connection, HRegionInfo regionInfo, ServerName sn, long openSeqNum, long masterSystemTime) Updates the location of the specified region in hbase:meta to be the specified server hostname and startcode.

类型变量类型为HRegionInfo的org.apache.hadoop.hbase中的方法参数

限定符和类型	方法和说明
static void	MetaTableAccessor.addRegionsToMeta(Connection connection, List<HRegionInfo> regionInfos, int regionReplication) Adds a hbase:meta row for each of the specified new regions.
static void	MetaTableAccessor.addRegionsToMeta(Connection connection, List<HRegionInfo> regionInfos, int regionReplication, long ts) Adds a hbase:meta row for each of the specified new regions.
static void	MetaTableAccessor.deleteRegions(Connection connection, List<HRegionInfo> regionsInfo) Deletes the specified regions from META.
static void	MetaTableAccessor.deleteRegions(Connection connection, List<HRegionInfo> regionsInfo, long ts) Deletes the specified regions from META.
static void	MetaTableAccessor.mutateRegions(Connection connection, List<HRegionInfo> regionsToRemove, List<HRegionInfo> regionsToAdd) Adds and Removes the specified regions from hbase:meta
static void	MetaTableAccessor.mutateRegions(Connection connection, List<HRegionInfo> regionsToRemove, List<HRegionInfo> regionsToAdd) Adds and Removes the specified regions from hbase:meta
static void	MetaTableAccessor.overwriteRegions(Connection connection, List<HRegionInfo> regionInfos, int regionReplication) Overwrites the specified regions from hbase:meta

参数类型为HRegionInfo的org.apache.hadoop.hbase中的构造器

构造器和说明
HRegionInfo(HRegionInfo other) Costruct a copy of another HRegionInfo
HRegionInfo(HRegionInfo other, int replicaId)
HRegionLocation(HRegionInfo regionInfo, ServerName serverName)
HRegionLocation(HRegionInfo regionInfo, ServerName serverName, long seqNum)

org.apache.hadoop.hbase.client中HRegionInfo的使用

声明为HRegionInfo的org.apache.hadoop.hbase.client中的字段

限定符和类型	字段和说明
protected HRegionInfo	ClientScanner.currentRegion

返回HRegionInfo的org.apache.hadoop.hbase.client中的方法

限定符和类型	方法和说明
HRegionInfo	RegionServerCallable.getHRegionInfo()
HRegionInfo	ScannerCallable.getHRegionInfo()
static HRegionInfo	MetaScanner.getHRegionInfo(Result data) 已过时。 Use MetaTableAccessor.getRegionLocations(Result)
static HRegionInfo	RegionReplicaUtil.getRegionInfoForDefaultReplica(HRegionInfo regionInfo) Returns the HRegionInfo for the default replicaId (0).
static HRegionInfo	RegionReplicaUtil.getRegionInfoForReplica(HRegionInfo regionInfo, int replicaId) Returns the HRegionInfo for the given replicaId.

返回变量类型为HRegionInfo的类型的org.apache.hadoop.hbase.client中的方法

限定符和类型	方法和说明
static NavigableMap<HRegionInfo,ServerName>	MetaScanner.allTableRegions(org.apache.hadoop.conf.Configuration conf, Connection connection, TableName tableName, boolean offlined) 已过时。 Use MetaScanner.allTableRegions(Connection, TableName) instead
static NavigableMap<HRegionInfo,ServerName>	MetaScanner.allTableRegions(Connection connection, TableName tableName) Lists all of the table regions currently in META.
List<HRegionInfo>	HBaseAdmin.getOnlineRegions(ServerName sn) Get all the online regions on a region server.
List<HRegionInfo>	Admin.getOnlineRegions(ServerName sn) Get all the online regions on a region server.
NavigableMap<HRegionInfo,ServerName>	HTable.getRegionLocations() 已过时。 This is no longer a public API. Use HTable.getAllRegionLocations() instead.
List<HRegionInfo>	HBaseAdmin.getTableRegions(byte[] tableName)
List<HRegionInfo>	HBaseAdmin.getTableRegions(TableName tableName) get the regions of a given table.
List<HRegionInfo>	Admin.getTableRegions(TableName tableName) Get the regions of a given table.
static List<HRegionInfo>	MetaScanner.listAllRegions(org.apache.hadoop.conf.Configuration conf, Connection connection, boolean offlined) Lists all of the regions currently in META.

参数类型为HRegionInfo的org.apache.hadoop.hbase.client中的方法

限定符和类型	方法和说明
void	MetaCache.clearCache(HRegionInfo hri) Deletes the cached location of the region if necessary, based on some error from source.
void	HBaseAdmin.closeRegion(ServerName sn, HRegionInfo hri) Close a region.
void	Admin.closeRegion(ServerName sn, HRegionInfo hri) Close a region.
static HRegionInfo	RegionReplicaUtil.getRegionInfoForDefaultReplica(HRegionInfo regionInfo) Returns the HRegionInfo for the default replicaId (0).
static HRegionInfo	RegionReplicaUtil.getRegionInfoForReplica(HRegionInfo regionInfo, int replicaId) Returns the HRegionInfo for the given replicaId.
static boolean	RegionReplicaUtil.isDefaultReplica(HRegionInfo hri)
static boolean	RegionReplicaUtil.isReplicasForSameRegion(HRegionInfo regionInfoA, HRegionInfo regionInfoB)
void	HBaseAdmin.split(ServerName sn, HRegionInfo hri, byte[] splitPoint)

类型变量类型为HRegionInfo的org.apache.hadoop.hbase.client中的方法参数

限定符和类型	方法和说明
static void	RegionReplicaUtil.removeNonDefaultRegions(Collection<HRegionInfo> regions) Removes the non-default replicas from the passed regions collection

参数类型为HRegionInfo的org.apache.hadoop.hbase.client中的构造器

构造器和说明
FlushRegionCallable(ClusterConnection connection, RpcControllerFactory rpcControllerFactory, HRegionInfo regionInfo, boolean writeFlushWalMarker)

org.apache.hadoop.hbase.master中HRegionInfo的使用

返回HRegionInfo的org.apache.hadoop.hbase.master中的方法

限定符和类型	方法和说明
HRegionInfo	RegionState.getRegion()

参数类型为HRegionInfo的org.apache.hadoop.hbase.master中的构造器

构造器和说明
RegionState(HRegionInfo region, RegionState.State state)
RegionState(HRegionInfo region, RegionState.State state, long stamp, ServerName serverName)
RegionState(HRegionInfo region, RegionState.State state, long stamp, ServerName serverName, long ritDuration)
RegionState(HRegionInfo region, RegionState.State state, ServerName serverName)

org.apache.hadoop.hbase.protobuf中HRegionInfo的使用

返回HRegionInfo的org.apache.hadoop.hbase.protobuf中的方法

限定符和类型	方法和说明
static HRegionInfo	ProtobufUtil.getRegionInfo(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin, byte[] regionName) A helper to retrieve region info given a region name using admin protocol.

返回变量类型为HRegionInfo的类型的org.apache.hadoop.hbase.protobuf中的方法

限定符和类型	方法和说明
static List<HRegionInfo>	ProtobufUtil.getOnlineRegions(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin) A helper to get the all the online regions on a region server using admin protocol.
static List<HRegionInfo>	ProtobufUtil.getOnlineRegions(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin) A helper to get the all the online regions on a region server using admin protocol.
static List<HRegionInfo>	ResponseConverter.getRegionInfos(org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionResponse proto) Get the list of region info from a GetOnlineRegionResponse

参数类型为HRegionInfo的org.apache.hadoop.hbase.protobuf中的方法

限定符和类型	方法和说明
static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest	RequestConverter.buildOpenRegionRequest(ServerName server, HRegionInfo region, int versionOfOfflineNode, List<ServerName> favoredNodes, Boolean openForReplay) Create a protocol buffer OpenRegionRequest for a given region
static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WarmupRegionRequest	RequestConverter.buildWarmupRegionRequest(HRegionInfo regionInfo) Create a WarmupRegionRequest for a given region name
static void	ProtobufUtil.mergeRegions(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin, HRegionInfo region_a, HRegionInfo region_b, boolean forcible, User user) A helper to merge regions using admin protocol.
static void	ProtobufUtil.openRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin, ServerName server, HRegionInfo region) A helper to open a region using admin protocol.
static void	ProtobufUtil.split(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin, HRegionInfo hri, byte[] splitPoint) A helper to split a region using admin protocol.
static org.apache.hadoop.hbase.protobuf.generated.WALProtos.CompactionDescriptor	ProtobufUtil.toCompactionDescriptor(HRegionInfo info, byte[] regionName, byte[] family, List<org.apache.hadoop.fs.Path> inputPaths, List<org.apache.hadoop.fs.Path> outputPaths, org.apache.hadoop.fs.Path storeDir)
static org.apache.hadoop.hbase.protobuf.generated.WALProtos.CompactionDescriptor	ProtobufUtil.toCompactionDescriptor(HRegionInfo info, byte[] family, List<org.apache.hadoop.fs.Path> inputPaths, List<org.apache.hadoop.fs.Path> outputPaths, org.apache.hadoop.fs.Path storeDir)
static org.apache.hadoop.hbase.protobuf.generated.WALProtos.FlushDescriptor	ProtobufUtil.toFlushDescriptor(org.apache.hadoop.hbase.protobuf.generated.WALProtos.FlushDescriptor.FlushAction action, HRegionInfo hri, long flushSeqId, Map<byte[],List<org.apache.hadoop.fs.Path>> committedFiles)
static org.apache.hadoop.hbase.protobuf.generated.WALProtos.RegionEventDescriptor	ProtobufUtil.toRegionEventDescriptor(org.apache.hadoop.hbase.protobuf.generated.WALProtos.RegionEventDescriptor.EventType eventType, HRegionInfo hri, long seqId, ServerName server, Map<byte[],List<org.apache.hadoop.fs.Path>> storeFiles)
static void	ProtobufUtil.warmupRegion(com.google.protobuf.RpcController controller, org.apache.hadoop.hbase.protobuf.generated.AdminProtos.AdminService.BlockingInterface admin, HRegionInfo regionInfo) A helper to warmup a region given a region name using admin protocol

类型变量类型为HRegionInfo的org.apache.hadoop.hbase.protobuf中的方法参数

限定符和类型	方法和说明
static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.GetOnlineRegionResponse	ResponseConverter.buildGetOnlineRegionResponse(List<HRegionInfo> regions) A utility to build a GetOnlineRegionResponse.
static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.OpenRegionRequest	RequestConverter.buildOpenRegionRequest(ServerName server, List<Triple<HRegionInfo,Integer,List<ServerName>>> regionOpenInfos, Boolean openForReplay) Create a protocol buffer OpenRegionRequest to open a list of regions
static org.apache.hadoop.hbase.protobuf.generated.AdminProtos.UpdateFavoredNodesRequest	RequestConverter.buildUpdateFavoredNodesRequest(List<Pair<HRegionInfo,List<ServerName>>> updateRegionInfos) Create a protocol buffer UpdateFavoredNodesRequest to update a list of favorednode mappings

org.apache.hadoop.hbase.zookeeper中HRegionInfo的使用

返回变量类型为HRegionInfo的类型的org.apache.hadoop.hbase.zookeeper中的方法

限定符和类型	方法和说明
List<HRegionInfo>	MetaTableLocator.getMetaRegions(ZooKeeperWatcher zkw)
List<HRegionInfo>	MetaTableLocator.getMetaRegions(ZooKeeperWatcher zkw, int replicaId)
List<Pair<HRegionInfo,ServerName>>	MetaTableLocator.getMetaRegionsAndLocations(ZooKeeperWatcher zkw)
List<Pair<HRegionInfo,ServerName>>	MetaTableLocator.getMetaRegionsAndLocations(ZooKeeperWatcher zkw, int replicaId)

参数类型为HRegionInfo的org.apache.hadoop.hbase.zookeeper中的方法

限定符和类型	方法和说明
static void	ZKAssign.asyncCreateNodeOffline(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, org.apache.zookeeper.AsyncCallback.StringCallback cb, Object ctx) Creates an unassigned node in the OFFLINE state for the specified region.
static boolean	ZKAssign.checkClosingState(ZooKeeperWatcher zkw, HRegionInfo region, int expectedVersion)
static int	ZKAssign.confirmNodeOpening(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, int expectedVersion) Confirm an existing unassigned node for the specified region which is currently in the OPENING state to be still in the OPENING state on the specified server.
static int	ZKAssign.createNodeClosing(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName) Creates a new unassigned node in the CLOSING state for the specified region.
static void	ZKAssign.createNodeOffline(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName) Creates a new unassigned node in the OFFLINE state for the specified region.
static void	ZKAssign.createNodeOffline(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, EventType event)
static int	ZKAssign.createOrForceNodeOffline(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName) Creates or force updates an unassigned node to the OFFLINE state for the specified region.
static boolean	ZKAssign.deleteClosingNode(ZooKeeperWatcher zkw, HRegionInfo region, ServerName sn) Deletes an existing unassigned node that is in the CLOSING state for the specified region.
static void	ZKAssign.deleteNodeFailSilent(ZooKeeperWatcher watcher, HRegionInfo regionInfo) Delete the assignment node regardless of its current state.
static int	ZKAssign.getVersion(ZooKeeperWatcher zkw, HRegionInfo region) Get the version of the specified znode
static int	ZKAssign.transitionNode(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, EventType beginState, EventType endState, int expectedVersion) Method that actually performs unassigned node transitions.
static int	ZKAssign.transitionNode(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, EventType beginState, EventType endState, int expectedVersion, byte[] payload)
static int	ZKAssign.transitionNodeClosed(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, int expectedVersion) Transitions an existing unassigned node for the specified region which is currently in the CLOSING state to be in the CLOSED state.
static int	ZKAssign.transitionNodeOpened(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, int expectedVersion) Transitions an existing unassigned node for the specified region which is currently in the OPENING state to be in the OPENED state.
static int	ZKAssign.transitionNodeOpening(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName) Transitions an existing unassigned node for the specified region which is currently in the OFFLINE state to be in the OPENING state.
static int	ZKAssign.transitionNodeOpening(ZooKeeperWatcher zkw, HRegionInfo region, ServerName serverName, EventType beginState)