Package org.apache.hadoop.hbase

Interface Summary

Interface	Description
Abortable	Interface to support the aborting of a given server or client.
Coprocessor	Coprocessor interface.
CoprocessorEnvironment	Coprocessor environment state.
Server	Defines the set of shared functions implemented by HBase servers (Masters and RegionServers).
Stoppable	Implementers are Stoppable.

Class Summary

Class	Description
Chore	Chore is a task performed on a period in hbase.
ClusterId	The identifier for this cluster.
ClusterStatus	Status information on the HBase cluster.
HColumnDescriptor	An HColumnDescriptor contains information about a column family such as the number of versions, compression settings, etc.
HRegionInfo	HRegion information.
HRegionLocation	Data structure to hold HRegionInfo and the address for the hosting HRegionServer.
HTableDescriptor	HTableDescriptor contains the details about an HBase table such as the descriptors of all the column families, is the table a catalog table, -ROOT- or hbase:meta , if the table is read only, the maximum size of the memstore, when the region split should occur, coprocessors associated with it etc...
RegionLoad	Encapsulates per-region load metrics.
RegionTransition	Current state of a region in transition.
RemoteExceptionHandler	An immutable class which contains a static method for handling org.apache.hadoop.ipc.RemoteException exceptions.
ServerLoad	This class is used for exporting current state of load on a RegionServer.
ServerName	Instance of an HBase ServerName.

Enum Summary

Enum	Description
Coprocessor.State	Lifecycle state of a given coprocessor instance.

Exception Summary

Exception	Description
ClockOutOfSyncException	This exception is thrown by the master when a region server clock skew is too high.
DoNotRetryIOException	Subclass if exception is not meant to be retried: e.g.
DroppedSnapshotException	Thrown during flush if the possibility snapshot content was not properly persisted into store files.
InvalidFamilyOperationException	Thrown if a request is table schema modification is requested but made for an invalid family name.
MasterNotRunningException	Thrown if the master is not running
NamespaceExistException	Thrown when a namespace exists but should not
NamespaceNotFoundException	Thrown when a namespace can not be located
NotAllMetaRegionsOnlineException	Thrown when an operation requires the root and all meta regions to be online
NotServingRegionException	Thrown by a region server if it is sent a request for a region it is not serving.
PleaseHoldException	This exception is thrown by the master when a region server was shut down and restarted so fast that the master still hasn't processed the server shutdown of the first instance, or when master is initializing and client call admin operations, or when an operation is performed on a region server that is still starting.
RegionException	Thrown when something happens related to region handling.
RegionTooBusyException	Thrown by a region server if it will block and wait to serve a request.
TableExistsException	Thrown when a table exists but should not
TableInfoMissingException	Failed to find .tableinfo file under table dir
TableNotDisabledException	Thrown if a table should be offline but is not
TableNotEnabledException	Thrown if a table should be enabled but is not
TableNotFoundException	Thrown when a table can not be located
UnknownRegionException	Thrown when we are asked to operate on a region we know nothing about.
UnknownScannerException	Thrown if a region server is passed an unknown scanner id.
YouAreDeadException	This exception is thrown by the master when a region server reports and is already being processed as dead.
ZooKeeperConnectionException	Thrown if the client can't connect to zookeeper