Package org.apache.hadoop.hbase.io.hfile.bucket

Interface Summary

Interface	Description
IOEngine	A class implementing IOEngine interface could support data services for BucketCache.

Class Summary

Class	Description
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 block, and use 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 on the 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.
UniqueIndexMap<T>	Map from type T to int and vice-versa.

Exception Summary

Exception	Description
BucketAllocatorException	Thrown by BucketAllocator
CacheFullException	Thrown by BucketAllocator.allocateBlock(int) when cache is full for the requested size