程序包 org.apache.hadoop.hbase.io.hfile.bucket

Provides BucketCache, an implementation of BlockCache.

请参阅: 说明

接口概要

接口	说明
IOEngine	A class implementing IOEngine interface supports data services for BucketCache.

类概要

类	说明
BucketAllocator	This class is used to allocate a block with specified size and free the block when evicting.
BucketAllocator.Bucket
BucketCache	BucketCache uses BucketAllocator to allocate/free blocks, and uses BucketCache#ramCache and BucketCache#backingMap in order to determine if a given element is in the cache.
BucketCacheStats	Class that implements cache metrics for bucket cache.
ByteBufferIOEngine	IO engine that stores data in memory using an array of ByteBuffers ByteBufferArray.
CachedEntryQueue	A memory-bound queue that will grow until an element brings total size larger than maxSize.
FileIOEngine	IO engine that stores data to a file on the local file system.
FileMmapEngine	IO engine that stores data to a file on the local file system using memory mapping mechanism
UniqueIndexMap<T>	Map from type T to int and vice-versa.
UnsafeSharedMemoryBucketEntry

异常错误概要

异常错误	说明
BucketAllocatorException	Thrown by BucketAllocator
CacheFullException	Thrown by BucketAllocator.allocateBlock(int) when cache is full for the requested size

程序包org.apache.hadoop.hbase.io.hfile.bucket的说明

Provides BucketCache, an implementation of BlockCache. See BucketCache for how it works.