Package org.apache.hadoop.hive.metastore

Interface Summary

Interface	Description
AlterHandler	Interface for Alter Table and Alter Partition code
FileFormatProxy	Same as PartitionExpressionProxy, but for file format specific methods for metadata cache.
HiveMetaHook	HiveMetaHook defines notification methods which are invoked as part of transactions against the metastore, allowing external catalogs such as HBase to be kept in sync with Hive's metastore.
HiveMetaHookLoader	HiveMetaHookLoader is responsible for loading a HiveMetaHook for a given table.
IExtrapolatePartStatus
IHMSHandler	An interface wrapper for HMSHandler.
IMetaStoreClient	Wrapper around hive metastore thrift api
IMetaStoreClient.NotificationFilter	A filter provided by the client that determines if a given notification event should be returned.
IMetaStoreSchemaInfo	Defines the method which must be implemented to be used using schema tool to support metastore schema upgrades.
MetadataStore
MetaStoreFilterHook	Metadata filter hook for metastore client.
MetaStoreFS	Define a set of APIs that may vary in different environments
MetastoreTaskThread	Any task that will run as a separate thread in the metastore should implement this interface.
MetaStoreThread	A thread that runs in the metastore, separate from the threads in the thrift service.
PartitionExpressionProxy	The proxy interface that metastore uses for variety of QL operations (metastore can't depend on QL because QL depends on metastore; creating metastore-client module would be a proper way to solve this problem).
RawStore

Class Summary

Class	Description
AcidEventListener	It handles cleanup of dropped partition/table/database in ACID related metastore tables
AggregateStatsCache
AggregateStatsCache.AggrColStats
ColumnType	Constants and utility functions for column types.
Deadline	This class is used to monitor long running methods in a thread.
DefaultHiveMetaHook
DefaultMetaStoreFilterHookImpl	Default no-op implementation of the MetaStoreFilterHook that returns the result as is
DefaultPartitionExpressionProxy	Default implementation of PartitionExpressionProxy.
DefaultStorageSchemaReader	Default StorageSchemaReader.
FileMetadataHandler	The base implementation of a file metadata handler for a specific file type.
FileMetadataManager
HiveAlterHandler	Hive specific implementation of alter
HiveMetaStore	TODO:pc remove application logic to a separate interface.
HiveMetaStore.HiveMetastoreCli	HiveMetaStore specific CLI
HiveMetaStore.HMSHandler
HiveMetaStoreClient	Hive Metastore Client.
HiveMetaStoreClient.MetastoreMapIterable<K,V>
HiveMetaStoreFsImpl
HiveMetaStoreUtils
HMSMetricsListener	Report metrics of metadata added, deleted by this Hive Metastore.
LinearExtrapolatePartStatus
LockComponentBuilder	A builder for LockComponents
LockRequestBuilder	Builder class to make constructing LockRequest easier.
MaterializationsRebuildLockCleanerTask	Cleaner for the MaterializationsRebuildLockHandler.
MaterializationsRebuildLockHandler	This is a lock handler implementation for the materializations rebuild.
MetaStoreEndFunctionContext	Base class which provides context to implementations of MetaStoreEndFunctionListener
MetaStoreEndFunctionListener	This abstract class needs to be extended to provide implementation of actions that need to be performed when a function ends.
MetaStoreEventListener	This abstract class needs to be extended to provide implementation of actions that needs to be performed when a particular event occurs on a metastore.
MetaStoreEventListenerConstants	Keeps a list of reserved keys used by Hive listeners when updating the ListenerEvent parameters.
MetaStoreInit	MetaStoreInit defines functions to init/update MetaStore connection url.
MetaStoreInitContext	Base class which provides context to implementations of MetaStoreInitListener
MetaStoreInitListener	This abstract class needs to be extended to provide implementation of actions that needs to be performed when HMSHandler is initialized
MetaStoreListenerNotifier	This class is used to notify a list of listeners about specific MetaStore events.
MetaStorePreEventListener	This abstract class needs to be extended to provide implementation of actions that needs to be performed before a particular event occurs on a metastore.
MetaStoreSchemaInfo
MetaStoreSchemaInfoFactory	Factory class implementation to create instances of IMetaStoreSchemaInfo based on the provided configuration
ObjectStore	This class is the interface between the application logic and the database store that contains the objects.
ObjectStore.QueryWrapper	A Autocloseable wrapper around Query class to pass the Query object to the caller and let the caller release the resources when the QueryWrapper goes out of scope
PartFilterExprUtil	Utility functions for working with partition filter expressions
PartitionDropOptions	Class to generalize the switches for dropPartitions().
RawStoreProxy
ReplChangeManager
ReplChangeManager.FileInfo
RetryingHMSHandler
RetryingMetaStoreClient	RetryingMetaStoreClient.
RuntimeStatsCleanerTask	Metastore task to handle RuntimeStat related expiration.
SerDeStorageSchemaReader
SessionPropertiesListener	It handles the changed properties in the change event.
StatObjectConverter	This class contains conversion logic that creates Thrift stat objects from JDO stat objects and plain arrays from DirectSQL.
SynchronizedMetaStoreClient	Synchronized MetaStoreClient wrapper
ThreadPool	Utility singleton class to manage all the threads.
TransactionalMetaStoreEventListener	Special type of MetaStoreEventListener which should only be called in a transactional context and only if the transaction is successful.
TransactionalValidationListener
TServerSocketKeepAlive	TServerSocketKeepAlive - like TServerSocket, but will enable keepalive for accepted sockets.
TSetIpAddressProcessor<I extends org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore.Iface>	TSetIpAddressProcessor passes the IP address of the Thrift client to the HMSHandler.
TUGIBasedProcessor<I extends org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore.Iface>	TUGIBasedProcessor is used in unsecure mode for thrift metastore client server communication.
Warehouse	This class represents a warehouse where data of Hive tables is stored

Enum Summary

Enum	Description
DatabaseProduct	Database product infered via JDBC.
IExtrapolatePartStatus.AggrType	The sequence of aggregation function on colStats.
IExtrapolatePartStatus.ColStatType	The sequence of colStatTypes.
ReplChangeManager.RecycleType
TableType	Typesafe enum for types of tables described by the metastore.

Exception Summary

Exception	Description
DeadlineException	Thrown when a long running method timeout is checked.
HiveMetaException
IMetaStoreClient.IncompatibleMetastoreException

Annotation Types Summary

Annotation Type	Description
RawStore.CanNotRetry	Annotation to skip retries