Package alluxio.worker.block

Interface Summary

Interface	Description
BlockStore	A blob store interface to represent the local storage managing and serving all the blocks in the local storage.
BlockStoreEventListener	A listener interface for receiving metadata mutation events of BlockStore.
BlockStoreMeta	Interface for the block store meta in Alluxio.
BlockWorker	A block worker in the Alluxio system.

Class Summary

Class	Description
AbstractBlockStoreEventListener	A block store event listener base class implementing the BlockStoreEventListener interface with empty methods bodies.
AsyncBlockRemover	Asychronous block removal service.
AsyncCacheRequestManager	Handles client requests to asynchronously cache blocks.
BlockHeartbeatReport	Container for the delta information in each worker-to-master heartbeat.
BlockHeartbeatReporter	Represents the delta of the block store within one heartbeat period.
BlockLockManager	Handle all block locks.
BlockMasterClient	A wrapper for the gRPC client to interact with the block master, used by alluxio worker.
BlockMasterClientPool	Class for managing block master clients.
BlockMasterSync	Task that carries out the necessary block worker to master communications, including register and heartbeat.
BlockMetadataAllocatorView	This class exposes a narrower read-only view of block metadata to allocators.
BlockMetadataEvictorView	This class exposes a narrower view of BlockMetadataManager to Evictors, filtering out un-evictable blocks and un-allocatable space internally, so that evictors and allocators can be developed with much simpler logic, without worrying about various constraints, e.g.
BlockMetadataManager	Manages the metadata of all blocks in managed space.
BlockMetadataView	This class is an abstract class for allocators and evictors to extend to provide limited access to block metadata.
BlockMetricsReporter	This class listens on block events and increases the metrics counters.
BlockStoreLocation	Where to store a block within a block store.
BlockStoreMeta.Factory	Factory for BlockStoreMeta.
BlockWorkerFactory	Factory to create a BlockWorker instance.
ClientRWLock	Read/write lock associated with clients rather than threads.
DefaultBlockStoreMeta	This class holds the metadata information of a block store.
DefaultBlockWorker	The class is responsible for managing all top level components of the Block Worker.
DefaultBlockWorker.Metrics	This class contains some metrics related to the block worker.
PinListSync	PinListSync periodically syncs the set of pinned inodes from master, and saves the new pinned inodes to the BlockWorker.
RemoteBlockReader	Reads a block from a remote worker node.
SpaceReserver	The SpaceReserver periodically checks the available space on each storage tier.
TieredBlockStore	This class represents an object store that manages all the blocks in the local tiered storage.
UfsInputStreamManager	An under filesystem input stream manager that can cache seekable input streams for future reuse.
UnderFileSystemBlockReader	This class implements a BlockReader to read a block directly from UFS, and optionally cache the block to the Alluxio worker if the whole block it is read.
UnderFileSystemBlockStore	This class manages the virtual blocks in the UFS for delegated UFS reads/writes.

Enum Summary

Enum	Description
BlockLockType	A read-write lock to guard one block.