org.apache.hadoop.hive.llap.cache

Interface BufferUsageManager

All Known Implementing Classes:

LowLevelCacheImpl, SimpleBufferManager

public interface BufferUsageManager

The buffer usage (refcount) tracker. Buffer usage can either be tracked by a cache, which will handle the coordination with eviction, or by a simple refcount manager to facilitate sharing when the buffer contains data for multiple readers.

Method Summary

Modifier and Type	Method and Description
void	decRefBuffer(MemoryBuffer buffer)
void	decRefBuffers(List<MemoryBuffer> buffers)
Allocator	getAllocator()
boolean	incRefBuffer(MemoryBuffer buffer)

Method Detail

getAllocator

Allocator getAllocator()

decRefBuffer

void decRefBuffer(MemoryBuffer buffer)

decRefBuffers

void decRefBuffers(List<MemoryBuffer> buffers)

incRefBuffer

boolean incRefBuffer(MemoryBuffer buffer)